Here's some new questions...
I've had my 10 gallon tank + filter for about a week now. I've already done one 10% water change (with treated water, of course). My questions:
1. How many water changes should I do a week?
2. Should I use the Gravel Vac to pull out water/clean rocks at the same time?
3. When do I do a "complete" water change?
4. Does doing a complete water change mess up the nitrogen cycle?
5. Anything else I should know about water changing?
Thanks for all the help everyone. I've learned so much here!