Just ordered for my 40 breeder and was wondering if anyone else has the same lighting and has done PAR measurements. Im currently running T5 4 lamps. 2 blue,1 violet,1white and have all 4 kick on from 1130-430pm and just a white and blue before and after ramp up but I don't think the 24 in fixture is providing enough so I ordered the 31.5 vipar.i already have hanging chains setup so I can get whichever distance from the water level and gravel levels.thx in advance and Appreciate the help.i currently have kenya,mushrooms,toadstools,zoas,gsp,anaacropora.birdsnest.3 rbta,3 clowns,scopa tang