This completely cleared the algae in 6 days in my 1000 gal. pond, but 8 days later the algae returned. How do you check the UV bulb if the unit has to be submerged when plugged in? I'm afraid the bulb may have already burned out. This completely cleared the algae in 6 days in my 1000 gal. pond, but 8 days later the algae returned. How do you check the UV bulb if the unit has to be submerged when plugged in? I'm afraid... » Read More This completely cleared the algae in 6 days in my 1000 gal. pond, but 8 days later the algae returned. How do you check the UV bulb if the unit has to be submerged when plugged in? I'm afraid the bulb may have already burned out. « Show Less
1327695
Pull off the top attachment while in operation and look down the neck of the unit. You will see a green light through the water that is being pumped if working. I've had mine for several years with no problems.
1780926
It came with directions on how to take the unit apart and clean it. If your fountain is not spraying as high as it was it might only be clogged. The whole unit comes apart to clean everything including the motor. If it is not cleaned you could burn out the whole unit.
1780927
not sure check with the manufacture I started to get growth back took the pump out sprayed it down well and it was back to normal again.
2266955
No light is apparent. You can tell when your pond starts to get too green. Basically follow the directions as to how often to replace. We are currently having an issue with green water. But I think our uv light holder is not working. They wear out sometimes. But when both are working, the pond is very clear.
364413
How many gallons you are trying to keep from freezing over and I not sure what wattage you are looking at? I have 2 ponds (2500 and 3000 gals. between 3 & 4 ft. deep) I have the 1500 Watt and just to keep an area open I could have probably gone with the lowest wattage and still had an area that didn't freeze over. The depth of your pond will also determine how quickly it will freeze, the deeper the pond the better and the less wattage needed. I live In Canada just across the border from Buffalo, NY.
1699532
It should have come all ready to go from the box. As long as it is submerged and the air line is out of the water it is fine. I would highly recommend you test your water quality. Sterilizers in general are used for cleaning up algae blooms, bacteria, or other water born parasites. These devices are not a cure all for all tank or pond problems. If you do not think the sun sun is working properly pull it from your tank or pond and start taking it apart. The base should easily pull off exposing the bulb( which is covered by a black tube). There will be a black foam filter included in the base. Remove the foam and clean it thoroughly. To access the bulb screw off the covering. Be careful there is a plastic ring on the threads of the casing. The bulb sits in glass covering. There is a clear rubber stopper that prevents the bulb from moving around in the tube. Pull off the glass tube and take a look at the bulb. Is it discolored? Is it cracked? If so you need a new bulb. When I ordered my sun sun sterilizer I also purchased a extra bulb from amazon. They usually last a year or two depending on use. If your water is crystal clear and your fish are dying then it is not the pump. Please test your water thoroughly. If you do not have a test kit most pet stores will test you water for you. I hope this was helpful for you and good luck.
473056
I'm not sure what gives, mine is still going strong since August at 16 hours a day....make sure that you can dissipate the heat from the bulb; ie: are you using a shroud around it? That would make it overheat maybe....or make sure your connections in your receptacle are set up right, ....or check to see if it being screwed in too tightly....also, keep your fingers off the bulb....oil from your hands can make it blow sooner than you would want it to. Hope that's a help.
201340
It is out of the water next to the filter. It is very simple to hook up. There is the inflow line and the out flow line to the filter. Plug it in and you are done. Our water was green. We live in the desert where it gets over 120 degrees in the summer. This UV light cleaned and cleared our water in three days. It is still clear a year later. I highly recommend this product.
1856449
Hi it sounds like your filter is not working before the water gets to uv filter. UV only kills microorganism not actually remove anything from the water
2180641
I know from reading that it have copper in it that help..i add it 2 time to my fish tank and its been 2 months now still no algae ..even the filter is clean. i have shrimp and neon and there are doing good.
35408
Sounds like you used too much safe start, only a 1/2 teaspoon per 2 gallons.. Dont rush it. For me, with a pump running, at least 7 days. Buy only 1 fish to test, watch the fish for a day. Add fish 1 or 2 at a time and see that they are healty..good luck
2196215
I purchased same unit. The blue light at bottom would come on when plugged in. I took it apart to clean filter and the clear washer didn't seat properly so I got water in glass and bulb blew out. I purchased 2 bulbs on Amazon for about $25. Put in new bulb and made sure no water could seep in tube and its been going strong for over 6 months.
809817
I had this for a while it was a good use when I was to busy, but look at the plastic grade that the water goes through make sure the holes are not clogged and make sure it is kept clean if at any reason it gets algae clean out well or the water will not come out.. and make sure to change your water every 5 days to keep clean. I hope that answers your question.
1743788
it takes very little time if it is put in before the algae starts growing. I generally put it in April, when the weather starts to get nice. I have a 3/4 acre pond and I use 2 bags. I have had no problems with it and it does a good job keeping the pond clear all summer. if you have other questions let me know.
2246988
Your red fuzzy algae is cyanobacteria. Three days with no light will get rid of it, temporarily. The real cure is to cut back on feeding and run granular ferric oxide (GFO) in a reactor to lower your phosphate level. That is the real culprit. More circulation and less light will disguise the symptom but not cure the problem. BTW most live rock leaches phosphates for several months. Just have to fight through it.
1923323
I have a 29 gallon biocube (not rimless) and this light is perfect. I have plate coral, sps, lots of button polyps, candy coral, and frogspawn. I have had this light for a couple months and they are all thriving! I think it would rest on the rimless tank pretty well as long at the water level isn't too high, but I have never owned one so I'm not sure how close the water would be to the light. Before I bought this I had the HQI metal halide bulb and had to clean the tank walls constantly because of so much algae growth, and I hated the color it put out. Now my tank stays super clean and I have no algae problems at all and I love being able to change the color however I want. Hope this helped! I have a 29 gallon biocube (not rimless) and this light is perfect. I have plate coral, sps, lots of button polyps, candy coral, and frogspawn. I have had this light for a couple months and they are all thriving! I think it would rest on the rimless tank pretty well as long at the water level isn't too high, but I have never owned one so I'm not sure how close the water would be to the light. Before I bought this I had the HQI metal halide bulb and had to clean the tank walls constantly because of so much algae growth, and I hated the color it put out. Now my tank stays super clean and I... » Read More I have a 29 gallon biocube (not rimless) and this light is perfect. I have plate coral, sps, lots of button polyps, candy coral, and frogspawn. I have had this light for a couple months and they are all thriving! I think it would rest on the rimless tank pretty well as long at the water level isn't too high, but I have never owned one so I'm not sure how close the water would be to the light. Before I bought this I had the HQI metal halide bulb and had to clean the tank walls constantly because of so much algae growth, and I hated the color it put out. Now my tank stays super clean and I have no algae problems at all and I love being able to change the color however I want. Hope this helped! « Show Less
1953775
Make sure you have a good filter. We built a dandy bio filter and rarely every have to clean it. We only drain it in the fall and reseed it with bacteria in the Spring. Check out Skippy's bio filter online. We just happen to have a handy lilac bush that conceals the large bio filter :0) Just remember it takes time to establish a 'natural balance' in your pond. Sometimes we equate crystal clear 100% of the time with 'healthy' and that isn't always the case. There are cycles - especially in Springtime - when algae blooms. This is normal and will dissipate on its own. Patience is key to a happy pond. A lot of great suggestions here. :0) Make sure you have a good filter. We built a dandy bio filter and rarely every have to clean it. We only drain it in the fall and reseed it with bacteria in the Spring. Check out Skippy's bio filter online. We just happen to have a handy lilac bush that conceals the large bio filter :0) Just remember it takes time to establish a 'natural balance' in your pond. Sometimes we equate crystal clear 100% of the time with 'healthy' and that isn't always the case. There are cycles - especially in Springtime - when algae blooms. This is normal and will dissipate on its own. Patience is key to a... » Read More Make sure you have a good filter. We built a dandy bio filter and rarely every have to clean it. We only drain it in the fall and reseed it with bacteria in the Spring. Check out Skippy's bio filter online. We just happen to have a handy lilac bush that conceals the large bio filter :0) Just remember it takes time to establish a 'natural balance' in your pond. Sometimes we equate crystal clear 100% of the time with 'healthy' and that isn't always the case. There are cycles - especially in Springtime - when algae blooms. This is normal and will dissipate on its own. Patience is key to a happy pond. A lot of great suggestions here. :0) « Show Less
2137229
After using mine for about a month I also noticed the same thing and had this same question. It was like that right out of the box. After researching the manufacturers website about this product it became clear that the red light means a burnt out UV bulb. The bulb cost as much as the whole filter and was not available so I trashed the whole filter. This is clearly not a quality product. Check www.aa-aquarium.com and see what you can find out.
491918
When u find the answer to that question please post it because I would like to know. I have the vacumn in question and I think I may have figured out - the Only time it works- is when u install a brand new filter and it goes for about an hour after that it's over with- mostly it just moves the stuff - if u have algae u will need to manually get that up though because it will need a much more thorough job than a random pattern like these auto vacs do