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We don't have access to CF bulbs that are usable for plants here in norway, so we have to settle for fluorescent. But now T5 is the big thing here, and more and more are aiming towards the 4wpg rule. But the general advice here in norway are usually 2wpg, but I think this is because very few norwegians dose or even know about no3 and po4. I have tried T8, T5 and MH, and so fare the T5 is my big favoritt. MH was good, but way to limited in selection of bulbs, and I found that decore easly shadowed the bottom part of my plants causing them to uproot...
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