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· Premium Member
5,770 Posts
It is true that your plants are the best indicator of the situation in your tanks. But if you're just starting out, I can see where you'd want to measure to get a good feel for what goes on when.

If you want to test fert levels, the main two which you can at least, somewhat accurately measure are nitrate and phosphate. There are good, accurate, and pricey test kits, and there are other cheaper alternatives. Whatever ones you use, you need to verify their accuracy by using solutions of known concentrations. Iron test kits are fairly useless, and potassium ones, as I understand it, are expensive and hard to find at the hobbyist level.

right now im just adding the recommended dosage of seachem iron, potassium, excel, ferts, co2, trace, nitrogen...
Don't forget to add phosphorus (phosphate).
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