I have two 10g tanks. One is fully cycled with two ghost shrimp, one peppered cory, (getting more next weekend) and one female betta I just bought this morning. In the other 10g I have a male betta. This is a tank I got off of Craigslist that came with gravel, plastic plants, etc (I don't use the plants but one since they were too pointy). I HATE the gravel; it's blue and white, and I am planning on changing it out to flourite in a week or two so that whatever plants I put in will grow better. This tank is still cycling and is past the ammonia stage and into the nitrite phase. Here is a pic of the male betta tank:
Okay, so here's the question: would changing out the gravel disrupt the cycle since there are BB already established in the current gravel? Also, I am using water from the cycled tank to try to help the newer tank quickly establish BB. Has anyone else done this?
ETA: sorry for the HUGE pic lol