Hi, I need help figuring out what I'm lacking in my low tech 10 gal shrimp/Endler tank. About two months ago I stuck a small Pothos in the back of the tank (leaves out of water). The new leaves have been turning yellow, so after some Googling I decided to take it out of the water to let it dry out a little & removed 2 of the leaves that were very yellow. Then I stuck it in a cup of plain tap water. I have hard water, but I figured it would be ok for the plant. Now today it's completely wilted & another leaf is yellowed. The hornwort in this tank also looks bad, it's yellow/tan on some parts. I only add 1/4 to 1/2 a dose of Flourish because of the shrimp. The water in my tank is a 2 to 1 mix of tap & RO. The java fern & java moss in the same tank look fine. Zero on Ammonia & Nitrite. Nitrates between 20 - 40 ppm. What am I lacking here? Thanks.
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