my wistera are suddenly growing really broad leaves.

Generally speaking with Wisteria, the less light the broader the leaf. This could be an indication that your bulbs need replacing.

Quartermain said:

Generally speaking with Wisteria, the less light the broader the leaf. This could be an indication that your bulbs need replacing.

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Interesting. I did not know this. I have wisteria in my 75g and my 20g and they are from the same plant.

The 75g has Orbit lights, 4x65 -- about 3.5 per gallon. I've turned off one bank of lights, so it should be about 1.75wpg.

The 20g has Coralife and is at 3.25wpg.

The wisteria in my 75g at ~1.75wpg has MUCH finer leaves than the wisteria in the 20g at 3.25wpg.

Of course, there is a height difference, however the difference in the plants' leaf sizes is amazing.

I would conclude that these Orbits put out a LOT more light than what is calculated.

Roan