Brackish tank build: F8s, gobies, and more

So recently I got my 35 gallon hex tank back up and running and I've been considering stocking it with a couple of Figure 8 puffers and some gobies. The tank will be fairly heavily planted with low-end brackish water (SG~1.004 to 1.006). I plan to upgrade to a 55 gallon tank in the near future (missed one with top and stand on CL for $20). Check out the hex tank below:



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Some info on the current tank (35 gallon hex):

• Filtration: Marineland HOT Magnum Canister @ 250gph. I heave since added a Proclear 75 wet/dry filter @ ~300gph in preparation for the tank upgrade. I'll post more on this with pics later)
• Lighting: 65 watt 6500K CFL (1.86 watt/gal, on 12hrs/day), DIY hood, LED moonlighting at night
• Heating: 150 watt titanium reef heater (SW compatible)
• Substrate: Laterite base, 2.5" of mixed flourite/gravel on top
• CO2: DIY yeast method, two bottles outputting through DIY bubble counter directly into canister filter intake
• Plants: java fern and various anubias (Since these photos were taken, I have added several more plants, including crypt wendii and corkscrew val.
• Decor: large piece of driftwood, a few lava rock "caves", and a half dozen fossilized coral frags (may add a few small "mangrove" style pieces of driftwood to further break up sight lines)
• Dimensions: 24" high, 11.5" side length , roughly 23" max width

DIY CO2


Filtration (old setup)


The tank has been fully cycled for 6 weeks and I have it stocked with 3 large feeder goldfish at the moment to maintain the bioload before the change over to brackish.

So now on the the questions:
1) Would 2 figure 8 puffers and 4-5 BBGs or 2 kinght gobies work in the current setup? If not, what would you suggest?
2) After upgrading to the 55 gallon what additional stock would you suggest? (I was thinking more gobies or 3-4 celebes rainbow fish)
3) Any other questions, suggestions, or comments would be greatly appreciated.

Thanks! Yeah I got the tank for an awesome deal off CL before I knew anything about fish keeping. For $50 I got the tank, stand, HOT magnum filter, titanium heater, python gravel vac, a master water test kit (mostly full), a bunch of chemicals, 2 air pumps, and other various supplies. It was hard to pass up despite the hex.

you should get your powerstrip up off the floor a few inches so you don't have a problem if you spill or get a leak

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Yeah, I had it pulled out that day when I was installing the Co2 system. The powerstrip is now hanging inside the stand so that all the cords form a drop loop.

how are you able to keep the plants in brackish water?

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There are many plants that will do just fine in brackish water. Since I will be in the low end brackish range (SG from 1.003 to 1.006), a wide range of plants can be used. Check out this link on planting brackish aquaria.

Yeah initially I will probably get the F8s and maybe a few BBGs. I will be upgrading to a 55gal very soon so I will just move them over to that.