If you are looking for the best filter for red eared slider tank, I always want to emphasize that go with a model from a reputable brand. This is because the brands would not lie, as the reputation of a brand will always be reflected in the quality of products that they get to sell.
It is even true with the new brands, they will quickly get the good reputation if they provide the best products. You will want to get the reliable filter to keep your red eared slider to stay healthy and alive. I have listed here some of the top brands in the industry, so whatever your choice is, you will surely be happy with it.
#1 Fluval series of filters
I have been use Fluval filter for my red eared slider tank for many years and this is my personal favourite. Whatever tank size you are using, you will find the Fluval filter model that suit your tank. They are available in a ton of size from 25 gallons to over 100 gallons. They come with filter media already and larger filter tray that allow you to add extra options of filter media.
Best of all, they come with 3-year warranties, what you always should look for when choosing filter. They’re very powerful filters that you can totally rest your mind that they will do the great job that can handle for from 145 GPH to 383 GPH. They have a selection of higher-powered filters for much larger tanks. If you are looking for something high quality and best for overall, then do not look over Fluvel filters.
However, as their effectiveness the biggest downside of Fluval filter is that they are pretty expensive. They are a bit pricier compared to the other brands.
#2 Penn-Plax Cascade
You are in the budget and want to get the filter cheaper than Fluval but still reliable, I would suggest any of the Penn-Plax Cascade series. This is excellent alternatives to the Fluval. Penn-Plax Cascade are known as their large capacity stackable trays, that allow for multi-stage filtration.
They are also offer user many option of additional media filtration. The filter rated range from 30 gallons to 200 gallons tank. They are designed with quick and easy push-button primers. Penn-Plax Cascade also offer 3-year warranties. The flow valves equipped allow to adjust the flow rate.
EHEIM make their names based on popularity gained by the quality of products. However, the biggest downside of EHIM is that they do not offer as much options of filter sizes as these two brands above. They only have 3 filter sizes that can filter from 42 to 92 gallons.
The EHEIM series of filters come with a 2-year warranty and starter filtration media. They are great filters for beginner as they reliable, easy to work with, and have a reasonable price. EHEIM filters Are cheaper than the Fluval filters but still effective.