hello. I just want to ask a few things about the fertilizers.
Firstly i post my today's measures.
i add weekly
fertilizers KNO3,KH2PO4,K2SO4,CSM+B,Fe13% EDTA
I do every 7th day 50% water change.
Although i add only 11 ppm of NO3 i always have over 20 ppm in my tank. i believe is because of feeding and fish waste and some from water change. When i read in forums all say to add 20-30 ppm of NO3, it means only with fertilizers? Or i check for nitrates in my tank and add the rest with fertilizer to reach my target of (20-30)ppm?.
The second.. Although i add only 12,73 ppm of Potassium i always ended up with 20 ppm. Even after my 50% water change. I tested my change water and i didn't had potassium in it. i had the feeling that something is blocking the K uptake. what's might going on?
one photo of my tank
Last edited by Darkblade48; 07-07-2019 at 09:54 AM.
Reason: Please use the edit function for back to back posts to keep threads cleaner