Red Sea REEFER® alternative
A Red Sea REEFER Alternative, Built in Acrylic
Shopping for a Red Sea REEFER? Compare it with an HGFC custom acrylic tank first. We build tanks in popular REEFER sizes, from the REEFER 625 to the S-1000, plus custom sizes up to 700 gallons. Every tank is backed by a 15-year no-leak warranty and shipped anywhere in the United States.
Side by side
HGFC Acrylic vs. Red Sea REEFER
Red Sea makes good all-in-one glass systems. If you want a tank with chemically bonded seams, a longer warranty, less weight and a design built around your space, here is how an HGFC acrylic tank compares.
| HGFC custom acrylic | Red Sea REEFER (glass) | |
|---|---|---|
| Tank material | Cast acrylic | Ultra-clear glass |
| Seams | Chemically bonded: panels are solvent-welded into one solid piece | Silicone-sealed seams |
| Leak warranty | 15 years, no-leak | 3 years standard, up to 5 with registration (REEFER G3+) |
| Largest size | Custom, up to 700+ gallons | About 210 gallons (REEFER S-1000) |
| Shapes | Any: rectangle, cube, corner, bullnose, racetrack, peninsula | Rectangle and peninsula models |
| Overflow | Center, corner, side or coast-to-coast, placed where you want it | Fixed by model |
| Design approval | Full CAD drawings you sign off on before we build | Off-the-shelf models |
Why reefkeepers choose acrylic
- Chemically bonded, not siliconed: acrylic panels are solvent-welded together, so the seams fuse into one solid piece. Glass tanks rely on silicone joints, which can break down over time and are a common cause of leaks.
- Crystal clear: acrylic lets through up to 92% of light and stays clear even in the thick panels large tanks need. It’s clearer than standard glass, with no green tint.
- Stronger: acrylic is far more impact resistant than glass and won’t shatter.
- Lighter: roughly half the weight of a comparable glass tank, which makes delivery and installation easier.
- Better insulation: acrylic holds temperature better than glass, so your heater and chiller work less.
- Built to last: backed by a 15-year no-leak warranty, standard on every build.
Same footprint, built in acrylic
Acrylic Tanks in Red Sea REEFER Sizes
Already own a REEFER, or love the size? We build acrylic tanks to the same published display-tank dimensions, so an HGFC tank can be a drop-in upgrade or replacement. Tell us your REEFER model and we’ll match the overflow and drilling to your setup in the CAD drawings before anything is built.
| Size | Inches (L × W × H) | Approx. gallons | Price |
|---|---|---|---|
| REEFER 625 size | 59.1″ × 25.6″ × 23.6″ | 131 | $1,320 |
| REEFER S-700 size | 59.1″ × 26.8″ × 25.6″ | 149 | $1,380 |
| REEFER Peninsula S-700 size | 59.4″ × 26.8″ × 25.6″ | 150 | $1,380 |
| REEFER 750 size | 70.9″ × 25.6″ × 23.6″ | 158 | $1,620 |
| REEFER S-850 size | 70.9″ × 26.8″ × 25.6″ | 180 | $1,656 |
| REEFER Peninsula S-950 size | 78.7″ × 26.8″ × 25.6″ | 200 | $1,860 |
| REEFER S-1000 size | 82.7″ × 26.8″ × 25.6″ | 210 | $1,920 |





A complete system, like an all-in-one
Turnkey: Tank, Custom Stand & Custom Sump
Like the all-in-one convenience of a REEFER? We build turnkey systems too: your acrylic tank, a custom stand and a custom sump, designed together to finish out the entire build.
- Custom stands and cabinets built to support your tank’s full weight and fit your room
- Custom acrylic sumps sized to your system, with filter sock or roller mat, skimmer and return chambers laid out the way you want
- Overflow and plumbing planned together, so tank, stand and sump line up perfectly
- One builder, one set of CAD drawings for the entire system
Questions
Red Sea REEFER Alternative FAQ
Is HGFC a good alternative to a Red Sea REEFER?
Yes. If you want a larger tank, a custom shape, chemically bonded seams instead of silicone, or a longer warranty, an HGFC acrylic tank is a strong alternative. Red Sea REEFER systems top out at about 210 gallons with a standard 3-year warranty (up to 5 years with registration). HGFC builds custom acrylic tanks up to 700+ gallons with a 15-year no-leak warranty.
Can I replace my Red Sea REEFER tank with an HGFC acrylic tank?
We build acrylic tanks to the published display-tank dimensions of popular REEFER models, including the 625, 750, S-700, S-850, S-1000 and the Peninsula S-700 and S-950. Send us your exact model and we’ll confirm fit, overflow position and drilling in the CAD drawings before production.
Is every tank built to order?
Yes. Every HGFC tank, including REEFER sizes, is built after your order is placed. Once your order and design details are confirmed, your tank goes into production, which typically takes 45 to 65 days, plus shipping time.
Why don’t you have tanks ready to ship?
Because every tank we build is different. Even two REEFER-size tanks can need different overflow positions, drilling and panel colors to match each owner’s setup. Each tank is sized and set up to fit exactly what the customer is looking for, so there’s unfortunately no one-size-fits-all tank we could keep on a shelf. Building to order means your tank is made for your space and your system, inspected, and backed by our 15-year no-leak warranty.
Is acrylic better than glass for a reef tank?
Acrylic tanks are chemically bonded: the panels are solvent-welded so the seams fuse into one solid piece, instead of relying on silicone joints that can break down over time. Acrylic is also clearer than standard glass, letting through up to 92% of light with no green tint, even in thick panels. It’s lighter, more impact resistant and a better insulator, and it allows custom shapes. Glass is more scratch resistant. For large and custom display tanks, many reefkeepers prefer acrylic for its strength, clarity and design flexibility.
How big can you build?
Our minimum is 125 gallons, and we build custom acrylic tanks up to 700 gallons and beyond. See our standard size tanks or request a custom build.
Do you ship nationwide?
Yes. We build and ship custom acrylic tanks anywhere in the United States. Shipping is quoted separately based on size, weight and location.
Are you affiliated with Red Sea?
No. HGFC Custom Tanks is an independent acrylic tank builder and is not affiliated with, endorsed by or sponsored by Red Sea. We reference REEFER model names only to describe tank sizes.
Upgrade from Glass to Acrylic
Tell us the REEFER size you’re considering, or the size you really want, and we’ll design your tank.
Red Sea® and REEFER™ are trademarks of Red Sea Aquatics. HGFC Custom Tanks is not affiliated with or endorsed by Red Sea. Model names are used only to identify comparable tank sizes.
