I myself have noticed that my plants don't use much phosphate at all. As the week goes on nitrates stay at about 8ppm, while phosphate just builds up. As for the question I think it matters more for each tank. If I stick with the 10:1 ratio I get green spot everywhere, and usually my tank's phosphate level is around 2-3ppm at all times. Also I have read that high phosphate can help with coloration of plants, but not so high that algae forms.
40 gallon SeaClear Acrylic, 192 watt Orbit Lunar PC, Filstar XP2, Filstar XP1, JBJ Regulator, Rhinox 5000 glass co2 diffusor, 9 watt UV sterilizer, Hydor Inline Heater, Pool Filter Sand substrate
Filstar pimp #53
How comes shoppings so stupid, looks at all this stuff I haves, what do I do's with it.