Sunsun Sun HW-704B 525 GPH 5-Stage External Canister Filter with 9W Uv Sterilizer

After reading some reviews on Amazon and watching a few YouTube videos on the SunSun HW-704(B), I decided to purchase one for my 30 gallon tank. The unit was shipped out quickly and arrived in good condition. It seems that SunSun must have also quality checked the canister for leakage since the filter sponge was slightly moist. I am pretty happy with it and bought another one for a new 50 gallon tank a few months later.Although I only use it once or twice a week, it's nice there is a UV sterilizer light to sanitize the water. Some people seem to have issues with the light damaging the plastic trays, but this seems to be a problem only if the light is turned on all the time. I didn't see this as a defect, but took it as something to keep in mind since the heat from any light placed next to plastic can cause it to degrade over time. There is also a small indicator light on the top of the canister to let me know that it is working.The build on this seems pretty good. The outside of the canister is sturdy and it fits between the legs of my 29 and 40 gallon metal Imagitarium tank stands from Petco. The green hose can be fitted onto the inlet and outlet by softening the hose - just dip each end into hot boiled water for a couple of seconds before slipping it over one of the canister's nozzles. Once it cools, the opening will contract to form a nice tight seal. I have not had any issues with leakage using this method.Note that there is a round orange sticker at the bottom of the inside of the canister. Use this as a reference when placing the baskets back inside. Make sure that the orange sticker aligns with the holes of the baskets. This is to ensure that the light is properly situated so that the UV light will work. This is a small but thoughtful touch on the part of the manufacturer.The unit is pretty quiet. If you are used to the sound coming from a hang-on-the-back filter, you will probably be happy with the reduction of sound from this canister filter depending on how you set up the return pipe. The pipe on my tank is set up to release the water back into the tank below water level to minimize splashing sounds.When I had a questions about the canister, I reached out to the seller who promptly responded and helped me. I am very happy with my purchase and the customer service and would not hesitate to buy the filter from this seller again.

Really like the filter . I got the 525? gallon per hour think its a little over rated so keep that in mind . holds alot of media seems well built . my flow may be because of amount of carbon I put in and being very fine not coarse . cant be happier for the price. Make sure to fill filter to ease priming as its a little bit of a pain . not very good instructions . also keep in mind this is a big filter barely can get it under my aquarium in the cabinet . its tight but fits uses every inch of space. This thing holds a ton of media . and do not believe some filter replacements the 304 /404 filters DO NOT FIT.just buy filters you can cut and put in yourself even polishing pads . be aware there is a side with a little magnet that has to line up for uv light to work . cleaned filter totally and put back together and uv didnt work . checked online and found out about magnet . wham turned filter and back in business . really alot better filter than I expected for the money but keep in mind upsize a size and flow should be great for you. I have 525 gallon in a 80 long or whatever 6ft long by 12" deep by 18" tall . and 525 is great not over powering . but long spray bar really mellows out the power of outcoming water . try it you wont be sorry . get filter media bags to help with clean up during maintence . the bags will hold media as to not get into pump impeller . I used some super fine media and went through system and stuck in spray bar . my fault not theirs . you can put like 5 filter pads 1 in each tray and trust me they will all catch stuff . you can probably put 10 lbs of carbon in it if you choose lol. I also got a box of ceramic rings that was for marineland canister . this thing holds 3xs the amount . all and all great filter have no complaints at all . yes its plastic so I know not to think its a steel tank and be rough with it . plus thought of 80 gallons of water in my living room keeps me gentle . not that think its cheap but lets face it plastic breaks . any questions please feel free ill answer what I can been keeping fish on and off for 35 years .