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Originally Posted by shewey With respect to lighting, I was thinking of going with 3 150watt HQI's which gives 2.5watt per gal. What are peoples thoughts on this? I think it will be ok providing I don't go for any plants which have high light requirements. |
2.5 wpg for a 180 gallon tank is high lighting by almost any standard. The watts/gallon rule really breaks down for small and large tanks. 2.5 wpg over a 180 is probably similar to 4 wpg over a 20g tank, all other things being equal. If I went with HQI's I'd do it exactly like you...... one 150W HQI per 2' seciton of tank. You should be able to grow anything under that.