http://cgi.ebay.co.uk/Set-of-2-Aquarium ... 240%3A1318 This week I got two of these glass diffusers, and I'm running both with a nutrafin diy cannister on each at opposite ends of my tank. Unfortunately, I have got some of the DIY yeast mixture in one of the diffusers-bubbles are coming out ok but it doesn't look great. Any idea how to clean out the mixture. I tried washing it last night with little success and even resorted to trying to suck out the mixture-this had some limited success but some of the mixture is still in there. BTW, the diffusers are really nice and were delivered very quickly from Hong Kong.