I have CO2 drop checker reagent available if any one wants. Its available free of charge but if you can trade me for some plant cuttings or shrimp I would appreciate it. Solution is 4 dKh with bromothymol blue pH indicator. Its similar to what you get from other vendors. Light green = 20-30 ppm...

I'm wondering what testkits i should have for non EI dosing. I do want to dose a few times a week, if not daily with macros and micros, but i'm not fond of such a large frequent water change as my tap water has a high PH so i would like to test often and only add what i need. As of now i have...