Nualgi Pond CareNatural Pond Cleaner, 60ml, Clarifier for Fish Ponds, Safe for All Aquatic Life Including Koi, Pond Water Clarifier Treats Up to 60,000 Gallons

Product certainly seemed to help clarify pond but I also introduced a uv light at the same time so they may well have worked together.

This stuff really works miracles. We struggled with string algae for years in our 1600 gal goldfish pond. We had a good pump, filter with U/V etc. but nothing seemed to help. About 4 years ago we started with Nualgi and in a couple of weeks string algae just about disappeared and the pond was crystal clear. Since then we just squirt in a maintenance dose and thats it! I really can't say enough good things about Nualgi. FIsh are healthy, froggies always seem to find a place to hang out and no more nuisance algae. The UV light stopped working last year and we did not bother to replace it.

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Took a whole month, then BAM! All clear. Amazing. Tried this after beneficial bacteria we were using (Microbe Lift) was helping but not completely keeping things under control. We started using this in conjunction with it, and only needed 2 drops each week for our pond size. We had our doubts the first few weeks because our pond did NOT clear up fast like some reviewers said. It took the full 4 weeks. But once it got clear, it has stayed clear. I can’t believe I spent good money on a tiny bottle of what is basically fancy pond water with super special algae in it, but yes, it is worth it. Our pond is a 165 gallon plastic insert that already had marginal plants, snails and mosquito fish, which was clear, then got gradually worse over the summer. This cleared it up even in the full sun and heat.

I’ve been using the Nualgi Pond products for the past two years with fantastic results. I highly recommended Nualgi.