Doug_E Posted January 18, 2021 Share Posted January 18, 2021 (edited) I have a planted 20g tank with 8 White Clouds, 6 local minnows (1-1.5"), 6 amano shrimp, and 4 Nerite snails. I am moving them to a 40g. I have already moved most of the rocks, but am using new substrate in the 40g (Flourite black sand and Eco Complete). I've also moved some plants and will move some more when it is time to move the fish. I had two filters on the 20g for the last month. I put the media from one into my Fluval 307 that is on the 40. It has been running for almost a week and I've been putting flake food into the tank every 24-48 hours. The 40 has a pH of 8, ammonia 0.5, and nitrite 0.5. So it isn't quite cycled. I'd like to get them into the new tank as soon as I can. They are a bit stressed with all the changes (removing rocks and plants), but otherwise healthy and eating. I have a few options, any better than others or any to avoid? Move 20g water to the 40g; Move Fish; Move the 207 filter on the 20g to the 40g and run both filters for a week or so. Move 20g water to the 40g; move bio media from 20g filter; dose with SafeStart+; move fish. Move 20g water to the 40g; move bio media from 20g filter; dose with Prime; move fish. Move 20g water to the 40g; move bio media from 20g filter; dose with Prime; move fish; dose with TSS+ in 24-48 hours. Wait until new tank cycles on its own, then move water and fish. I can find information that says any one of these is right, safe, bad, wrong. At the end of the day I want to do this quickly, but also without killing or harming the fish. Edited January 18, 2021 by Doug_E Link to comment Share on other sites More sharing options...
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