Ok, so I have read about 100 posts on the advantages and disadvantages of switching from gravel to sand and I have decided to make the change. I want to switch to rid myself of the alkaline PH buffer from the gravel and to provide a better environment for a small group of Panda Corys.
Here is my plan. Step one, turn off my pump and the the tank rest for 10 minutes. Step two, Drain 3/4 of the water from my tank (off the top) into a spare tank I have along with the filter and heater. Step 6, transfer my fish to the spare tank. Step 5, empty and discard the gravel from my tank and rinse it out. Step 6, paint the back of the tank black. Step 7, put in aquarium sand, arrange decor, fill tank, and allow to rest for 24 hours. Step 8, install pump and heater and when temp equalizes, transfer the fish.
Here are the things I am still trying to figure out.
1. Can the pump be off for 30 minutes without becoming "toxic"?
2. Does aquarium sand need to be rinsed? I live in an apartment without access to a garden hose.
3. How many pounds of sand do I need for a 20 gallon tank?
Any help or suggestions would be appreciated. Thanks.