Hello everyone, I recently scored a really good deal at a yard sale and got a 20-25 gal tank for $10. A week prior I bought 2 betas(male & female) in a specialty beta tank. After learning that a usual .5-1 gallon beta tank is miserable for them I bought this tank. I just have a few questions. The woman at the pet store told me that no other fish can live with goldfish including betas due to the ammonia they produce, Is this true? Will no other cichlids or any other fish for that matter go with them? Currently, I have 9 Comet goldfish, 2 betas, and 3 other fancy goldfish (forgot the name) and everything seems to be working out fairly well. I have a 20-g Aquaclear filtration system, tap water conditioner, and accu-clear cloudiness remover stuff, but the tank still seems to be somewhat cloudy. How can I resolve this? I added the Accu-clear to the tank 8 hours ago and the cloudiness is the same. The bottle says to wait 24 hours before I add more to the tank. I realize that I'm inexperienced when it comes to aquarium life so any advice will be well apreciated. I hope to one day own a Chinese Dwarf Lionfish (I fell in love with them today) and want to start small before I move up to something like that. Thanks in advance guys!