Hello everyone, new to the group and new to ponds as well. The wife and I just moved into a new house, that happens to have a pond in the backyard, its about 4 feet by 10 feet, with average depth of about 2 feet, ill measure all when I get gome from work tonight. Anyway the Owner of the house (we rent btw) told me its about 1000 gallons im pretty sure. Now in the main reservoir at one end, are 3 pvc tubes. One leads up to a small reservoir that waterfalls into a second middle reservoir that then again waterfalls into the main. The other 2 pvc tubes lead up into the middle reservoir. So , I need 3 pumps to make it all work correctly. My Question is, how big should the pumps be, and also how many filters do I need? What kind? Ive done so much googling, im starting to lose my mind trying to figure it out lol. When we first moved in, the water was disgusting, no pumps or filter so I emptied it, scrubbed it, and filled it back up, I bought 3 cheap pumps, for like each, like 500gph and hooked em all up, and a smartpond black filter that I found that previous renter left in the garage. The next day the water was crystal clear, like, it looked amazing! Now the water isn't green, like ive been reading, I don't see any algae, but its not as clear as it was, like cloudy I guess would best describe it, imma have to take some pics and upload probably to best show what I mean. I guess what I really want to know is , to get this thing going, whats it gonna cost me? what 3 pumps and filter do I need to get it up and running, UV yes or no? And from what ive read, it looks like I need to test my water as well to give you a better idea of what levels look like, which I will do as well. After I set up pumps and filters and get it all going again. Had to edit, i think i need more powerful pumps, because my waterfalls dont really "fall" they kinda trickled, not enough water flow i think.