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I recently did this switch, it went v smoothly. Scooped the gravel from the middle to the side with a litter tray scoop ( new for this purpose lol). Then did the same for the other side. I pulled out any prnaments etc and left the fish in. They just went to the opposite side of the tank i was clearing at the time. I figured this was less stressfull than netting them into buckets. I had prewashed the sand, and put dechloronator in the final rinse in the sand bucket. I left just enough water in tocover the sand, then turned off my filter. I did give the tank bottom a good syphoning over as i was removing gravel.
I then scooped the wet sand into a jug and placed it at one side of the tank to the bottom. I just poured it out keeping the flow v close to the bottom. I covered the whole tank this way going from left to right. Sand caused no problems at all. Put fress water in the tank as id removed about half put stuff back into the tank, fish and me v happy!
Ok that sounds like a vey good idea. I was worried about doing it by netting the fish out but this seems better. So you just put sand into the jug and poured it into the tank that way?
I have switched almost all my tanks from gravel to sand and have never not once experienced a mini cycle. I have done 3 outta 4 of my tanks(100,75,55). Have you decided on what sand you will be using?