Hi Tom et al.,
Let’s summarize what I’ve done so far in order to get a nice planted tank with rotala wallichii and tonina. Ferts are given according to EI, with some changes: 2x more NO3 than EI suggests and more micro’s than EI suggests (1.5xEI). Water changes are performed 2x a week.
-I lowered the KH to 2.5-3 by using now 70% osmosis water. I added CaCl2 back in order to keep the GH unchanged (= 7). This resulted in healthy growth of the tonina. New sprouts are formed and the plant is looking very nice. The rotala improved a bit as well, but still looks ratty.
As I mentioned before, at a pH of 5.67 the fish are gasping at the surface. I have a pH of 5.90 and a yellow/light green dropchecker. According to Tom a fair amount of CO2.
But the rotala still looks ratty… The next thing I’ll try is to lower my lights, I have 9 hours 2.5 watts/gallon and 1 hour 3.75 watts/gallon. I think I’ll remove the one-hour light peak. Apart from the rotala issue, I would like to have a slower growth in general. After one week not trimming, the tank looks like a jungle, without any nice recognisable scaping. Maybe I have just a bit too much light in my tank. Cutting it down will maybe result in a healthier rotala?? (at least, that is my hypothesis.)
Last week I noticed some algae in my tank. I don’t think it is spyrogira. But have no clue what it could be…However,I made a picture:
I pruned it away. Are otocinclus sp. any help in addition to the manual removal and the cherry shrimps?
In general: I am very happy that I am now able to grow the tonina (at least for 3 weeks)!! I’ll try to work on the rotala, but I have a feeling that this weed is not that easy.
Tank before weekly pruning:
Tank after weekly pruning:
Thanks!
yme