Yes they work fine...I bought a bunch of 1 and 1.6 gal pico tank setups awhle back at *****, but their lights were a cheap 3 watt incandescant. I knew that full up before buyinghtem and had no intentions of using a incandescant light. But I also bought a heap of 7 watt Red Sea (Dragon Fly models) and 13 watt lights by Redsea all of which were PC form another lfs, so thats what lights i used on the $3.11 1gal tanks. The 7 watt PC ballast will drive a 9 watt PC bulb without a problem, and no matater how you cut the cake with a 7 or 9 watt PC over 1 gal its still 2 to 3 times the minimum recomended watts per gal usually stated. They work just fine for a lot of corals..You can get daylight or actinic or a 50/50.........I used some of my 1 gal tanks for small mini fuges for the opther 1.6 and 2 gal Red sea wave tanks I bought as well.......Water changes are a must, anmd thje Aqua Clear AC20 MINI works fine for a hob mini fuge and water flow. and ,mechanical filtration if desired.....Beats having a small power head in a small tank and get heat buildup, more than necessary. The hob types work just fine for this use.
