I did this for each filter to compare the GPH stated on the box versus what the pump could actually produce. That would be 65 and 70 seconds, respectively. Here’s an example if the recorded times were 01:05 and 01:10. So, to get the gallons per hour, I divided 3,600 by the average time. This gave me how many seconds it took per gallon of water pumped through the filter. I averaged together the two times from each category for each filter and then divided that time by 4. To make the math a bit easier, I converted all the times to seconds, so 01:07 would become 67 seconds, and so on. To be fair, I tested each filter four times, twice with media and twice with all the media removed. I timed how long it took for the tub to fill with water. Then a 4 gallon (15 liter) tub was lowered into the tote so that it caught all of the water spilling out of the front of the filter. I plugged the filter in and made sure that it was well primed and pumping out the maximum amount of water. I did this by hanging each filter on the side of a sturdy plastic tote filled with water. I tested the GPH (gallons per hour), to see how much water each filter pump could move. All were rated for 60-70 gallon (227-265 liter) tanks: I purchased five different hang-on-the-back filters so that I could compare them head-to-head. Last update on / Commissions Earned / Images from Amazon Product Advertising API How I Tested & Reviewed The Seachem Tidal Filter I tested a Tidal 75 for this article, but Seachem also makes a Tidal 35 and a 110 suitable for smaller and larger aquariums. The shrimp issue notwithstanding, I think this filter is one of the best on the market and find it to be well worth the price. If there were easy ways to make this filter shrimp safe, I’d deem it the most perfect filter ever created. The internal motor also has the bonus of being quieter than external motors. An internal motor needs no priming at initial set up or after maintenance.Īs long as the water is above the minimum water line, this filter will start itself right up with no fuss. This filter features a motor that is housed inside the tank (an internal motor) versus an external motor that is outside the aquarium. Unfortunately, I don’t currently have a good workaround to make this filter shrimp safe. It has tons of space to load up on different kinds of filter media. I highly recommend this filter for most aquarium applications. However, just because this filter is great, it might not be for you. I was really impressed, and I think you will be too. It’s looks great on paper, so I wanted to put the seachem tidal hob through it’s paces and compare it other filters in the category. The Seachem Tidal Hang-on-Back filter has plenty of power and an enormous amount of space to add and customize your own filter media.
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