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01-09-2007, 03:36 PM
Hi Tom,
Don't seem to be able to access the second page. It's showing an image of p529 and an abstract underneath.
It won't let me peruse further as I don't have JSTOR access rights
Brian.
515L tank running on a 90L sump, CO2, 3 70w 5200k MHs, Aqua Medic Volcanit substrate, EI ferts
Juwel Trigon 190L corner tank, Dennerle Deponit substrate, 70w 5200k MH, planted, CO2 & EI ferts.
45L & 70L tanks, non- CO2, EI 'light' using Excel
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