yeast CO2, do you guys fert full EI ? - The Planted Tank Forum
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post #1 of 2 (permalink) Old 05-30-2014, 01:52 PM Thread Starter
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yeast CO2, do you guys fert full EI ?

out of curiosity, do you fert full EI or part of it when using yeast co2 not pressurized?

PS. yes i know it does depend on lightning, plant mass, fish load and moon phase..
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post #2 of 2 (permalink) Old 05-30-2014, 04:22 PM
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It really depends a lot on the factors you mentioned, including output of your CO2 and size of your tank. Even if EI is excess ferts for your situation, the 50% weekly water changes will limit the buildup. With pressurized system and medium light on my 155g, I found that EI plus fish load was giving me 30-40ppm nitrates, so I have almost eliminated KNO3 dosing - just K2SO4 and some traces and KH2PO4. What you don't want is too much light for your CO2 situation, then you run risk of algae problems and stunted or shabby-looking plants.
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