The Grim Reefer
Ready for some NOBALL!!!
<a href=showthread.php?s=&postid=13624436#post13624436 target=_blank>Originally posted</a> by chad508
what would you compare 2 of the 48" icecap retros to in mh output. 250's are 400's. i was previously running 2 400 watt 12k reeflux on coralvue ballast. am i close to that. i ask to see if what i am keeping coral wise will be fine.
Depends on the setups. A 20K 400 watt halide mounted 8" above the tank probably isn't hitting the sand with any more PAR than a good normally driven T5 fixture sitting on the tank.
The IC's are easily equal to a 250 watt halide setup.