Re: Black spots on leaves
New similar problem -
Now all plants except our large Java Fern are doing well. The Java Fern is showing black on almost every leaf. Older leaves are showing decay, like skeletons in part are all that remain.
I have checked for comments on The Planted Tank Forum and have posted again on the the thread you folks suggested in your original reply.
The fish load has been increased to 45 inches, and I expected to see gains in the nitrogen, but in fact, it looks like I am quite deficient in it.
The most recent test results are Nitrate 15ppm, Nitrite 0.00, GH about 75 ppm, KH about 150 ppm, pH of 6.8. I am dosing based on 60 Gallons of water and following the dosing guidelines on each bottle of Seachem Fluorite, Excel. Potassium, Phosphorus, Iron and Trace. I add about 1 Tbsp of baking soda to try and get the pH at 7.2, but as you can see, I am a bit low at this time.
Using SeaChem multi-test for Phosphates, I get a reading of about 2.5. I let the test sample stay in the little tray for at least 30 minutes and do not see any changes or formation as described in the test pamphlet. Iron is so low, I cannot read anything on the SeaChem Multitest for iron.
The other two types of plants in the tank are cryptocorn wendtii and anubia nana. The anubia flowered this summer and I had 10 flowers at one time. Three was the most I have ever had before at one time in my 7 years of this hobby. The cryptocorn reproduces at a moderate pace. The leaves survive for a long time, but remain greenish and not red. Is this due to the very low iron?
Any advice, suggestions or comments will be appreciated.
10 Gal Glass Shrimp tank
70 Gallon planted tank with about 50 inches of animals