I have a pair of jewled cichlids I got from petsmart.(only time I ever bought a fish there.) They had about 100 fry with them. I got to take some. Fry home. I set up a new tank with among chips and old tank filter to help new cycle. The tank is 15 gallons. With a ac50 and a 90gph power head on the under gravel. To much water flow in the tank? Bigger tank? Less flow? Idk if I should use the under beable or switch to a air stone. Any ideas would be great thank yo. s typed in pho ne) mfk needs a DROID app bad