Equipment and Services we offer
Gear Service / Repair
Gas Fills - Air / Nitrox / Trimix
Gear Service / Repair
Everything from routine maintenance to emergency repairs. We do it all!
Tanks / Valves
Gas Fills - Air / Nitrox / Trimix
Gear Service / Repair
We offer visual inspections, hydrostatic testing, valve repairs, and even oxygen cleaning
Gas Fills - Air / Nitrox / Trimix
Gas Fills - Air / Nitrox / Trimix
Gas Fills - Air / Nitrox / Trimix
We are the ONLY shop in our area that offers the premium gas fills that we do. From "hyper pure" air to 100% oxygen and helium, we fully support ALL gas fills to the working pressure of your tanks
Paintball Services
Paintball Services
Gas Fills - Air / Nitrox / Trimix
We fill, test, and service all paintball tanks, even those with pressures up to 4500 psi
Other Services
Paintball Services
Other Services
We offer 24/7 on call, emergency, and scheduled miscellaneous Marine related SCUBA services to the Southern Maryland area.
Equipment Service & Maintenance
Equipment Service & Maintenance
At Southern Maryland Divers, your safety starts with your gear. We take equipment service and maintenance seriously because even the best divers rely on properly cared-for equipment. Many diving incidents and close calls happen when gear is overdue for service or hasn’t been maintained correctly.
To keep your equipment performing flawlessly, we recommend annual inspections and a complete rebuild every two years or every 100 dives—whichever comes first. Regular service not only protects your investment but also ensures every breath underwater is smooth and worry-free.
Our certified technicians service all makes and models of regulators and BCDs, using manufacturer-approved parts and procedures. Drop your gear off with us and dive with confidence knowing it’s been serviced by professionals who care as much about your safety as you do.
We proudly service all makes and models of regulators and BCDs, providing expert care that helps you dive with confidence.
Regulators and BCD's
First Stage - $45.00 labor plus parts
Second Stage - $35.00 labor plus parts
Octopus Second Stage - $35.00 labor plus parts
Integrated Octopus - $35.00 labor plus parts
Regulator set inspect and tune - $30.00
Quote only - $20.00 goes towards service cost. If no service is completed, it is returned un-assembled
Other Services
Front of line service - $50.00 per setup
One week service - $80.00 per setup
Extensive cleaning - $10 +/- depending on extent
Console Service - FREE New O-rings, HP spool cleaned, hose ends cleaned
Computers - $5 plus parts - Includes change of battery, o-ring, time reset, check functions
BCD Service - $25 labor plus parts
O2 Service Cleaning - $25 per stage
Service Turnaround & Priority Options
Our typical turnaround time for equipment service is 20–30 business days (excluding weekends and holidays). We always aim to complete work as quickly as possible, and most services are finished sooner.
However, due to ongoing supply chain challenges, delays can occasionally occur if replacement parts are on backorder. To avoid any issues, we strongly recommend bringing your gear in for service well before your next dive trip.
For divers with upcoming travel, we offer Front-of-Line Service. This priority option moves your regulator set to the top of the queue. While we can’t guarantee completion before your departure—especially if parts are delayed or the regulator requires extensive work—we’ll do everything we can to get it ready. If it’s not finished in time, we’ll provide a free rental regulator set for your trip.
Tank Inspections & Hydrostatic Testing
Tank Inspections & Hydrostatic Testing
At Southern Maryland Divers, your safety is always our top priority. Scuba tanks must receive a Visual Inspection every year and a Hydrostatic Test every five years to remain compliant and ensure dependable performance.
We handle all tank inspections, cleanings, and hydrostatic testing in-house with a fast turnaround, so you’re not without your tanks for long. If your tanks are in for hydrostatic testing, we’ll provide free rental tanks to keep you diving without interruption.
All inspections are performed by our PSI/PCI-certified cylinder inspector, ensuring every tank meets or exceeds industry standards.
Our staffs credentials
PSI Visual Cylinder Inspector #RE23566
PSI Eddy Current Technician #RE2831
PSI Oxygen Cleaning Cylinder Technician #868
PSI Valve Repair Technician #1456
Visual Tank Inspection (Air Only) - $20.00
Includes inspection, Air Fill, and O-Rings (Needs to be completed yearly)
Visual Tank Inspection (to 40% Nitrox Clean) - $25.00
Includes inspection, Air Fill, (Nitrox extra) and O-Rings (Needs to be completed yearly)
Visual Tank Inspection (O2 Service Clean - to 100%) - $40.00
Includes inspection, O2 Cleaning, Air Fill, (Nitrox or O2 extra) and O-Rings (Needs to be completely yearly) - turn around time longer
Hydrostatic Certification Test - $55.00 - Does not include visual eddy test - see below
Includes Hydrostatic test, Date Stamp, Visual inspection, Valve inspection and lube, Air Fill, (Nitrox Extra but pro-rated) and new O-Rings (Needs to be completed every 5 years. Carbon tanks every 3 years.) Carbon Fiber wrapped tanks add $5
Tank Tumble - $20.00+
Cost depends on amount of corrosion
Light Rust $20.00, Heavy Rust $30.00 and up depending on amount of rust.
Valve Repair - $35.00
Includes ultrasonic cleaning, parts, and rebuild on most valves.
Tank and Valve O2 Cleaning - $50.00
Per tank, all sizes, parts extra. Cleaned using Blue Gold, Christolube, Viton O-rings, and OCA air for drying.
Doubles Breakdown / Reassemble - $20.00
If you bring your doubles in assembled for VIP or Hydro, we will need to break them down for inspection and reassemble them. If you do it yourself, please bring them in broken down and let us know you will assemble them to avoid this charge. Doubles count as (2) separate tanks and charges will reflect two tanks.
*All tanks made of the 6351-T6 aluminum alloy must be tested using an eddy current testing machine per federal law. These tanks were made by Walter Kidde (years 1972 thru 1998), Luxfer (years 1972 thru May 1988). We will notify you if your tank falls into this category. Due to the very risky nature of these cracks / tanks, we will not service or fill them.
Want to make sure your tanks stay in tip top shape? Check out this article on cylinder care.
Premium gas fills - Air / nitrox / trimix / oxygen
Gas Fills & Blending
At Southern Maryland Divers, we guarantee clean, pure, and accurate gas fills every time. Our commitment goes beyond equipment maintenance and precision—it’s about the personal care and attention each fill receives from our expert blenders.
From Nitrox to Trimix, every blend is performed by certified Gas Blender Instructors who follow strict quality and safety standards. You can trust that every tank you fill with us meets the highest levels of accuracy and purity.
Air Quality & Standards
At Southern Maryland Divers, we take pride in providing the cleanest, highest-quality breathing gas available. From medical-grade oxygen to 99.99% pure helium, every fill meets the strictest purity standards—so you always know you’re breathing the best air possible.
Our Mako K14 compressor is meticulously maintained according to manufacturer guidelines. We use Lawrence Factor high-quality filtration to deliver OCA Grade E “hyper-pure” air, ensuring every tank meets or exceeds industry standards.
To verify quality, our air is sampled and analyzed quarterly by Trace Analytics. Click HERE to see our latest test results, or check it out in person, we have it hung on the wall next to the compressor!
Fast & Accurate Fills
At Southern Maryland Divers, we know your time is valuable—and no diver wants to spend the night waiting on tanks. That’s why we focus on fast, reliable turnaround for every fill.
Air and 32% Nitrox fills are typically completed the same day, custom Nitrox, and trimix fills are usually ready within two days. When you request 32% Nitrox, you get exactly 32%—no guessing, no shortcuts.
We take pride in accuracy, double-checking every blend to ensure you get the mix you requested and the performance you expect.
Gas Fill Prices - Air
Hyper Pure "Oxygen Compatible" - Air Fills
All Tanks - $7.00 (flat rate per cylinder)
Tanks with pressures above 3500psi, add $3.00 per tank
Bulk air fill rate (over 100 fills per year required) - $5.00 per tank
Gas Fill Prices - Nirox (up to 40%)
120 Cubic ft and less - $14.00
120 Cubic ft and more -$16.00
We bank over 1300 cubic feet of pre-mixed 32% so you can get nitrox fills while you wait.
Technical Gas Fill Prices - (We have oxygen boosters!)
Custom Nitrox Mix 21%-40% - $0.20 per cubic ft
Nitrox by the cubic ft (your choice) up to 40%
Deco Gas "Technical Fills" - 40% and higher
Oxygen per cubic ft - $.65 per cubic ft
Air Top / Blending Fee - $6.00
Custom Trimix Blends
Oxygen - $0.65 per cubic ft
Helium - $2.75 per cubic ft
Air Top / Blending fee - $6.00 per tank / set doubles
Fill Capacity & Oxygen Service Requirements
At Southern Maryland Divers, we’re equipped to handle fills quickly and efficiently. With hookups for up to 10 tanks at a time and more than 4,000 cubic feet of banked air, we can often fill your tanks while you wait. For added convenience, we can also fill up to four tanks directly in your vehicle—following all safety guidelines.
Oxygen Service Notice
Tanks used for gas mixes containing more than 40% oxygen must be cleaned, certified, and current for oxygen service. Acceptance of another agency’s oxygen service certification is at the sole discretion of our gas blender.
If an external visual inspection reveals contamination or other concerns, the blender may require the tank to be re-cleaned before filling. These policies are in place to ensure the safety of our blenders and customers.
Paintball tank fills / services
Paintball tank services
We fill all compressed air paintball tanks, even tanks that have pressure values up to 4500 psi. All tanks must be current with DOT standards to include a current Hydrostatic Test Date. We also provide those services for your tanks.
Tank Fill Prices - Compressed Air Only
Compressed Air fills up to 4500 psi
All size paintball tanks - $5.00 per tank
Weekend Fill Station Rental
Our fill station comes with a scuba tank and fill adapter so you can fill your paintball tanks on the field in-between games.
Aluminum 80 cubic foot tank @3000 psi full - $20.00
**Includes compressed tank fill adapter. Will fill tanks multiple times over entire weekend
All customers using SCUBA tanks or rented for purposes of paintball will need to complete and sign the paintball waiver. Save time by filling out the form and brining it with you. The form can be found HERE.
Paintball Tank Hydrostatic Testing
Paintball Tank Hydrostatic Testing - All size paintball tanks (includes fill) - $35.00
Aluminum paintball tanks generally require hydrostatic testing every 3-5 years depending on the DOT Special Permit associated with your tank. Carbon Fiber paintball tanks also require hydrostatic testing, usually on the same 3-5 year rotation but please note that carbon fiber tanks have a total life-span of only 15 years from the date of manufacture.
Other scuba related services we offer
Commercial Underwater Work
We offer 24/7 on call, emergency, and scheduled miscellaneous Marine related SCUBA services to the Southern Maryland Area (Calvert, St. Mary's, Charles, and Prince George's Counties) as well as scheduled underwater work to the tri-state (Maryland, Virginia, and Washington DC) areas. These services are offered via referral, so please leave a message and we will get back to you with an insured, professional dive services contact info.
You MUST leave a voicemail if you call and don't get an answer, we will call you back
*Premium Bottom Cleaning
*Hull and bottom inspections with video evidence
*Fouled Props
*Prop entanglement removal (crab pots, rope, etc.)
*Zinc replacements
*Lost Item retrieval from bottom (motors, tools, other valuables, etc)
*Intake cleaning
*Hull damage inspection (includes digital images / video of any damage found)
*Underwater Video Inspections and Productions
Underwater Photography / Videography
SCUBA diving is an exciting and rewarding sport. Sometimes, it's hard to explain to our family and friends how beautiful it is under the water. We can help you share those memories and save them forever. We offer custom tailored photography for your SCUBA diving. Prices vary depending on location, times, etc. Contact us for a quote.
*Staged underwater scenes
*Pinnacle dives
*Training - (Must be allowed and arranged with the instructor first)
*Exotic Vacations (We offer topside photography as well)
*Custom Video with soundtrack
You can see examples of my work at This Link.