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Personally, I am not convinced $50-$100+ fans are really worth that much more than fans in the $10-$20+ price range. Having said this, I have never own an expensive one. I have been using $10-$20+ aquarium fans bought online with moderate success on a 40L and 150L tank. A thermostat to turn the fan on and off could also be easily bought online for $10+. If you're the handy sort, try do a google search as there are a lot of DIY builds using computer fans and mobile phone/laptop power adapters which apparently work great if not better. Depending on what kind of shrimps you are keeping, I find fans are usually fine for cherries but not so much for CRS/CBS/TBs. I have both cherries and CRS/CBS/TBs and I used to think aquarium fans are the best cost effective option for me but after using it for about a month, I find aquarium fans are only effective depending on a number of other factors... e.g. ambient temperature, tank cover/hood, water volume, etc. After weeks of topping up water due to evaporation and putting ice blocks (and some dead CRS/CBS/TBs), I decided that it was too much of a chore and took the fun and time out of shrimp staring. I eventually bit the bullet and bought a chiller and it was the best investment EVER. I now get to enjoy the hobby a lot more and no longer worry about temperature spikes when I am at work or away. Also, no more dead shrimps since. Win-Win! :-)

Dont mind if I do. 382

Wow! I really didn't think I would win with the calibre of tanks entered. Thanks again to the sponsor Techden, SKF, and everyone involved in organising these comps.

Yeah we can only dream... Probably the same set up Squiggle has at is house.

Well we just need to test it then. Here is a Multiquote post. Like away to see if it breaks again.

http://shrimpkeepersforum.com/forum/index.php/page/articles.html/_/documentation/diy/diy-shrimp-tank-fans-r30 thought this link might help, just in case you didn’t know about it

Here's my favourite of my 3 shrimp tanks

I'll see how I go with a couple of usb fans as they are so cheap and if they fail I have already been recommended a specific brand of computer fan with something like 15 decibels I think it was. Thanks for all your help!

Just saw this picture.... 3-4g running all these breeders... Now I am thinking about tearing down my 2 foot, and covering it in breeder boxes. Only thing that stops me is the noise of these. There has to be a quieter, and simpler way.