Planted Tank Guru
Join Date: Dec 2017
Location: Elk Grove, California
I like the way your tank looks. Its fun with the pots and moss. Good job. You have taken on quite the challenge- Walstad set-ups can be tricky. I would take the time to get familiar with this type of setup, keep reading and getting familiar with your plants, lighting, etc...
And only then add fish to the equation.
Do you understand the nitrogen cycle?
Cycling a tank can be variable- for some, it can take a week, for others it can take several weeks. It depends. Looks like you are just starting to show an ammonia spike. Be patient before you add fish, you want to be able to see nitrates with zero ammonia or nitrites before ready to add fish.
Then, when add fish, I would recommend at least 25% water change on 3rd and 6th day as a precaution to ammonia spike as bio-filter adjusts to match the new bio-load. Do water changes as a matter of course through this first week; the benefits are multiple: lower chances of ammonia/nitrite spike, lowers bacterial/parasitic load in water column that could have been introduced with fish, helps rebuild immune system of fish stressed by transport and acclimation.
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