alot of people claim that u need to feed every day and that is fine if they
want to. we feed ours three times a week and it is growing like a WEED. we
try to feed a good 75% of the heads each time with brine and mysis shrimp
with target feeding. the other times it catches shrimp and cyclopeze in...
are u wanting a fixture or do u have a canopy that u are going
to mount them in ? also what wattage? from what i have seen
from u on other posts u have a 24 inch tall tank. if true then u
would want at least 175 watt but 250 watt would be better
and allow for a wider variety.