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Message: [QUOTE="hammer, post: 535710, member: 22057"] Crystal clear pond all winter, ran the aqua 4000, had a bit of a freeze on the outer wall and sent my pressure gauge 1.5 times around the dial and now the normal zero is half the dial, lol. anyways, I digress. I mean we were crystal clear, the temps warmed up to the 50's, my water temp is 46. we a few days in the 60's lots of sun and the algae started to cover all the surfaces. no algae all of the fall or winter. I think my Aqua II bacteria are not alive and well yet, seems like i'm going to have to wait a couple more weeks for it to recover, correct? I have sequence that pumps 6000gpm. I have a valve on my filter output pipe to create head pressure when it's not running my full setup. typically i shut that valve down by a third to get near the 4000gpm. last night i set it wide open and the pond water cleared up a little bit but now i've got bubbles suggesting there is leaf litter in the pond. I had it quasi covered with 2" foam all winter and couldn't skim it. it's been open now 2 weeks and I skim it all the time. not sure if it's my bacteria in the filter not working, or the pine needles, or a combination of both? keep in mind, i also take 800 square feet of my roof into this pond and we've had a lot of rain so i'm guessing my filter isn't alive yet and it's just a perfect storm. it's not pea soup but i started to get film on my masonry, so i used a broom and scrubbed it off. another hint is the leaf tannins are giving me a not peasoup color but more of a rotted leaf color, broomed the bottom and roughed it up and clouded up my water last night. thoughts? [/QUOTE]

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