69 reviews for Algae Repellent Agent

1. Keiran NoelVerified Purchase

   Rated 5 out of 5

   I have been using Algaefix for several years and have found it to be the absolute best for cleaning up filter clogging floating algae. My pond holds a...More

   I have been using Algaefix for several years and have found it to be the absolute best for cleaning up filter clogging floating algae. My pond holds about 1,500 gal and 20+ fish. At the start of warmer weather, I treat the pond with Algaefix about three times and have crystal clear water all summer, only needing a touch up treatment on occasion. I recommend that treatment be stopped around September to allow regrowth for fish grazing over the winter months. Using one of those hose fertilizer sprayers makes application very easy. You might also consider getting some barley straw in the water to stop green water as it aids the Algaefix. I don't know how they do it, but Amazon sells this product at about half the price of pond outlet shops and ships it fast. I highly recommend this product for algae control in outdoor fish ponds. Just be certain to follow the directions and keep aeriation going.
   Luna RuddVerified Purchase

   Rated 5 out of 5

   Do not use any algae products unless you have alot of aeration. Your fish will die! I have a very large septic aeration pump going to a very large dif...More

   Do not use any algae products unless you have alot of aeration. Your fish will die! I have a very large septic aeration pump going to a very large diffuser on a bottom drain and I lost 1 fish. However I did use alot more than directions. I have been vacuuming what looks like dish soap bubbles off of the top of the water for 3 weeks after most of algae was dead. I tried another brand first and it did nothing at all. This starts to work immediately but I had a really bad really tough algae problem. It works but not as fast as I wanted so I waited the 3 days before retreating the first time then overdosed the 2nd and lagae gone. Can't wait for soap bubbles to be gone also (from oversosing I'm sure)
   Virginia CartyVerified Purchase

   Rated 5 out of 5

   I've used this product after the winter to help clear my pond up. I do have to use this product regularly to keep my pond clear. Caution should be exe...More

   I've used this product after the winter to help clear my pond up. I do have to use this product regularly to keep my pond clear. Caution should be exercised when using this product. Your pond needs lots of aeration for the product does reduce the oxygen in your water. This is very important if you have fish.
   Sarah-Jane UnderwoodVerified Purchase

   Rated 5 out of 5

   I purchased fish from a pet store. The day after I added them to my 3,000 gallon water garden, the pond turned green. This product cleared up the mess...More

   I purchased fish from a pet store. The day after I added them to my 3,000 gallon water garden, the pond turned green. This product cleared up the mess in a few days. My frogs and fish were fine. I run the waterfall 24/7 always (except winter).
   Leonardo CowellVerified Purchase

   Rated 5 out of 5

   I use this for my pond and various fish tanks. It's super concentrated and easy to use. It takes care of the green in my fish tanks, as well as my pon...More

   I use this for my pond and various fish tanks. It's super concentrated and easy to use. It takes care of the green in my fish tanks, as well as my pond. Seems to be bio safe and I use it once a week for all of the water features I have.
   Aamir HainesVerified Purchase

   Rated 5 out of 5

   I was a bit slow to cleaning my pond this spring and found myself remorseful when the algae got out of control. BUT consistent use of API products sav...More

   I was a bit slow to cleaning my pond this spring and found myself remorseful when the algae got out of control. BUT consistent use of API products saved my pond. Thanks API for all your products
   Vincent OrrVerified Purchase

   Rated 5 out of 5

   I have two 57 watt UV lights on my 8000 gallon pond but occasionally for some unknown reason the water starts to turn a little green. I put one cup of...More

   I have two 57 watt UV lights on my 8000 gallon pond but occasionally for some unknown reason the water starts to turn a little green. I put one cup of this in the pond and the very next day it is sparking clear. I have tons of aeration with two waterfalls and a bottom aerator so no signs of stress at all on fish when using this. I used the recommended dosage once when my UV lights quit working when i was away. The pond was very green when i got back. I fixed the uv lights and with allgaefix it was clear the next day. Amazing! I do recommend for occasional maintenance in addition to UV lights here in the hot Florida sun. I also have a shade cloth canopy to filter out some sun. I would not solely rely on chemicals like this to keep your pond clear. Make sure you have a ton of bio balls and try to limit some sun with plants or canopy/pergola. I have learned the hard way over the years with numerous ponds to treat the problem not the symptoms.
   Cheyenne KeyVerified Purchase

   Rated 5 out of 5

   Excellent purchase and service, extended time of insurance to purchase dor and worth it because what the packet was next to arrive
   Iestyn RowleyVerified Purchase

   Rated 5 out of 5

   I had a few koi added to my pond/waterfall this spring. Lazy me let the algae run wild. It got to the point you couldn't see the water basically, and ...More

   I had a few koi added to my pond/waterfall this spring. Lazy me let the algae run wild. It got to the point you couldn't see the water basically, and I had ducks bobbing for the fish. I got this out of desperation, because the fish hadn't been eating (I don't blame them) and the pond was beyond hope. So I ordered this stuff, and used it every 3 days like it said. I was sure it was going to kill the fish. I hesitate to use superlatives because to me that's the sign of a fake review, but this stuff was fantastic. Within a week the pond was clear, and the fish were healthy and finally eating. I was simply amazed. Note: You will have to clean out the filter every day while this algae control does it's thing because so much junk will get into the filter and pump if you don't. But this product is one of the few that greatly exceeded my expectations. Highly recommended.