Cobalt Aquatics Repl. E-X-T Sponge
This is my first experience with an external filter. I've had it set up for a month doing weekly 10% water changes.
I have a moderately planted 29G tank currently understocked.
My water quality has remained perfect and constant since installation.
I love the fact that it has an external pump. If anything were to go wrong, any similar pump could be used as a replacement. It's almost completely silent and the water flow looks very good.
August 15, 2014
Performance of Cobalt Aquatics E-X-T Canister Filter
I use this canister filter to maintain the water quality in a tank that holds a juvenile alligator. The tank is a 75 gallon and is approximately a quarter of the way full. The tank has no gravel which helps keep the water clean from debri. The canister filter is versatile when it comes to setting it up, it makes placement of the intake and return easy. The inline pump allows me to use this filter in low water level conditions, unlike your traditional canister filters that require water levels to be near full. The pump is not as powerful as I would like. I believe one of its weaknesses is the flow rate. I would recommend using this filter with the assistance of a hang on back filter or another canister if you plan on using it on a larger aquarium sunch as a 50 gallon or greater. In my opinion this filter would work great on a smaller aquarium or turtle tanks that are not filled to compacity. I use a small submersible filters to help circulate the water. You can also use a powerhead for the same result. Instruction are not easy to understand, but it is not difficult to set up.
June 5, 2015
very silent while running and east to clean and use. this filter gets a thumbs up
September 11, 2013
low quality, ineffective
I scoured the internet for an external canister filter that will successfully operate when placed at a level above the aquarium, and I found this one which claims to be able to do so. The way in which it is able to do so is so simple that it's ingenius: just take the pump out of the canister entirely, and place it directly in the aquarium instead! However, upon carefully installing everything exactly as stated in the directions----which as an aside were certainly not the clearest I've ever encountered, but I pondered them at length until I deduced exactly what they were telling me to do----the flow was close to zero. I tried all kinds of adjustments----moving the pump all over the place in the aquarium, lengthening and shortening the inflow/outflow tubes, moving the canister higher and lower, cleaning the pump and impeller and ensuring it was fully functional, etc.----and yet the flow never changed even slightly, always remained at just barely a trickle. So, this doesn't even come close to working as advertised. Maybe would work in the conventional below-aquarium setup, but I did not try that because that is not what I wanted nor why I bought this specific product. Also, doing something like using a much higher GPH MaxiJet instead of the stock pump might have made this setup work, but I did not have a MaxiJet on hand to try that. Also, the build quality is quite cheap. The media baskets have the pathetically cost-cutting nylon fabric handles which totally get in the way of adding/removing media and stacking the baskets on top of each other, and the overall design makes it extremely easy for some of the media and/or an uncooperative nylon fabric handle to block the inflow channel that is routed through the center of the basket stack. And yet even though I went through a lot of effort to make sure this channel remained totally unblocked, the flow nevertheless remained always close to nil. So definitely not worth it, and a hugely disappointing waste of well over $100.
September 14, 2013