Quote:
Originally Posted by StirCrazy
ok, so one problem here.. if you only go with 3 bulbs then you will have to lift them up to around 16" or more to get an even spread across 8 foot.
since you are lifting them the PAR values are going to drop in the tank and you are also thinking of dropping down to 250's . 250 watt is not always a down grade from 400's but with the ballasts you are looking at ya they are. so now you are lowering your PAR even more.
I recomend that you stay with 400's if you want 3, or go to 4 MH if your dropping to 250's on an electronic ballast.
I would personaly go with 4 bulbs either way, but I also like lots of PAR.
Steve
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I agree. 3 bulbs/400W 4 bulbs/400W or 250W