Top positive review
95 people found this helpful
Requires a little modification to be tank-friendly. Super quiet
on 4 January 2012
I have one of each size of stingray filter, and they all have shown excellent performance to-date.
They are quiet, easy to clean, reliable, and they look good too.
There is an issue with the cost of zeolite replacements. My advice is to take them out from day one and discard them. The zeolite does effectively remove ammonia from your tank, but that is what the bacteria are meant to do in your filter. The idea of 'cycling' a tank, is to cultivate a nice balance of good bacteria in your filter and gravel. If you remove the ammonia chemically with the zeolite, you starve off the bacteria, and so your tank can not be maintained unless you endlessly replace your zeolite every 4 weeks. If you're new to fish keeping, I suggest you read up on 'cycling an aquarium' before you start buying the fish.
So, remove the zeolite cartridges and stuff the space with filter wool or other fish-friendly filter material.
Second issue is injury to fish - not from being sucked up the filter - this is NOT an issue with adult fish and has never once happened. But when you suction cup the filter to the glass, a very small 0.5cm gap remains between glass and filter. So what, you might think? What could fit down there? A guppy will, and a tetra, and even a danio. I know from experience! Fish will find any crevice in your tank to explore/jump into, and if you don't spot them in time, they're dead.
Solution? A non-toxic sheet of tank friendly silicon did the trick for me, tucked between the filter and the glass, or you can stuff filter wool behind the filter. Anything to stop little fishies going in there.
Pros - Filters quick, quietly, lots of water agitation for great oxygen exchange. No noise, simple to clean. Lasts a long time, even in hard water.
Cons - the zeolite cartridges are not needed in a healthy cycled tank. Using them can make your tank dependent on them as they can starve the good bacteria. You need those good bacteria in your filter to keep your water parameters healthy!
Warning - small fish like guppies, danio and tetra can get trapped between filter and glass. Use a non-toxic material like filter wool to fill the gaps. It is not suited to fry! They get sucked into the filter and die.