I could use a little help with where to start when dosing K in my aquarium. I have used the Fertilator, I have adjusted EI...and have had horrible problems with my only high-ish tech tank for years. I finally started testing more instead of assuming/adjusting, and my current dosing is very far off from what EI recommends, despite the fact that my tap starts me at 0 for KN03/P04 (yes, I calibrated my kit). For the first time in a long time my plants are looking much better, but I am having the typical pinhole problems with my H. Pinnatifida, which I read is a Potassium hog. I would like to start adding Nu-Salt and increase as needed, but I’m not sure how much to start with for a 20g.
gh/kh: both 4
I add (all x 3):
3/4 tsp KN03
Compared to EI guide:
10- 20 Gallon Aquariums
+/- 1/8 tsp KN03 (N) 3x a week
+/- 1/32 tsp KH2P04 (P) 3x a week
+/- 1/32 tsp (2ml) Trace Elements 3x a week
This results in 20ppm Nitrate and 2ppm Phosphate. Seems like the KN03 should be crazy high, P04 super low, but like I said, the plants are doing much better.
I realize the ppm for the Nitrate isn’t considered high, but the amt I am already adding does seem like a lot...so I would like to add some K. I do realize that I shouldn’t have a problem with dosing a lot of K, but where should I start? Does 1/2 tsp x 3 sound like too much? Fertilator doesn’t tell me it will be obscenely high at that amt, but program hasn’t been working for me anyways. I should add that the current H. pinnatifida is newer plant. The pinholes are coming after the higher KN03 dosage started. But I did have it to a higher degree when I had it in the past before the higher dosage. I believe it is a K issue. It’s not too bad yet, but I have lost this plant to this problem before.
And because everyone wants a terrible pic