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#11
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Hi:
I am new to this hobby. This may be a dumb question, under what scenerio you need a 400w MH. I currently have 1 90G with 4X48" VHO. I am thinking of upgrading it to MH. Should I use 2x250 or 2x400? Currently I have no SPS. I plan to keep some SPS after the upgrade. Thanks |
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