Koralia Evolution 850

First time using a wave maker. I was initially turned off by the high price of the brand recommended by YouTubers. I found this one and figured I'd give it a shot. Initially, I had some problema as it kept turning off. I took it out and it ran fine in the sink for an hour so I figured it was something to do with the tank. I may have had too much particulate matter in my tank since it was a new setup.I let the filter run for a few days and reinstalled it today. It's running great now. I'm amazed that it runs silently! It creates plenty of water movement for my 75 gallon tank, and I'm happy to not need bubblers. I'm trying for a quiet tank this time around!

Great continuous flow pump that runs very quiet. I had two of these in my 40 gallon reef. Worked like champs. The magnet mounting mechanism is solid and the pumps are mounted on an adjustable peg to point in a variety of directions. I did end up replacing these with a wave maker set up but am considering bringing one of them back in for some additional movement. Nothing wrong with these pumps just wanted to add a controllable system.Bigger than say a Jebao or MP10 but you save some bucks and granted they are not wave makers. Hydor does show these as being used with their wave maker controller but I have seen that they will click every time the speed is changed. I have seen conflicting literature that these can or cannot be used with a wake maker. Even from the manufacturer literature.If you want to use them as they are designed, I can wholeheartedly recommend them.

Now THIS is more like it!!I recently bought an all-inclusive adaptable power head/circulation pump by a well known aquarium equipment company (you can see my other reviews for who)...it was noisy & really a bust. Then I purchased the Hydor Koralia Evolution 750/850 circulation pump after seeing good reviews for it; I am really glad I did!It (unlike that "other" product) has a 'snap' together cage assembly that will not pull apart. I attached the very strong magnet on the outer wall and placed the pump against the corresponding spot in the tank. I routed the power cord at the back of the aquarium and plugged it in. Oh, oh...nothing...(or so I thought at first). There was NO sound (also unlike that "other" pump that was horrendously loud)...nothing. Well, a few plants WERE moving, so maybe. Yup, upon checking there was great water flow, it was just so QUIET!I love this circulation pump.Would I recommend this? You better believe it.

So, With a large reef tank, I go through a lot of pumps. I have been buying powerhead conversions which replace the little spinner wheel with a propeller and cage. While better than powerheads with slots cut into the volute casing, still not great and prone to hammering when started by the reef pump controller. Whack whack 24 hours a day has to wear on the inhabitants nerves. The Hydro Koralia, while more expensive than power heads with conversions, certainly performs better. Quieter, better turbulent flow with more gentle currents. Also doesn't hammer back and forth on the propeller shaft when started. The screens clog a bit perhaps if there is ditrius floating around the tank but easy to clear. Durability also seems much better on these than powerheads. I will accumulate these gradually to keep from shocking the fish budget but well worth the money.

Quite. Moves a bunch of water without blowing my sand everywhere. I have it turning on and off every hour with a cheap timer and it's working well.

I work in a public aquarium, and we have several of these in service. One by one, they are having electrical failures, and tripping our gfci outlets. One of them, i discovered after putting my hand into a tank and feeling a slight shock in the water. We have had three of them fail in this manner as of today. I dont know what happened to the quality of this brand. These pumps used to be bulletproof back when they were the originals. Did the company get cheap and outsource them to china? I will no longer be trusting this brand. If you risk buying these pumps, make very sure you have it plugged into a gfci protected outlet.

I really like this wave maker. It is dead silent with good water flow. I have one in a 55 gallon tank and can't hear it at all. Practically no vibration as well. I also use it for my saltwater mixing station and have had no complaints. The magnetic wall attachment had rubber feet with three rubber bands that hold the waver maker in place and this is what eliminates 99% of the noise/vibration. Overall I highly recommend this product for any beginner aquariust.

They still work they do the job like the day I bought them and I purchased them over 2 years ago just about although they increased the price on these I just ordered some 3 weeks ago thinking they were the same size as these but they weren’t not sending them back because I already opened them and figured I’ll use them till they don’t work anymore