I am so happy that I found this site! It's just what I need! I have quite a few questions 1. Any pointers on how to gently clean and especially vacuum my tanks? I would love to have fully planted tanks but the root/vacuum thing confuses me. Also, I squished an oto on accident yesterday...I feel horrible about it. 2. How safe is it to plant my established tanks? 3. Is it normal to have one cory loner with 3 in the tank? 4. If my otocinclus never moves is that because he's scared of the other fish, should I move him? 5. How do I keep my guppies from breeding? 6. I have tiny white dots all over the glass of one of my tanks, they came with the guppies and have been there for at least 2 months. They move. They are about 1 or 2 mm. in diameter with clear outsides and white middles. They haven't grown, except in number. They can be above or below the water line. What are they? How do I get rid of them?