Morning all,I am looking for some advice please,I have 2 filters on my pond and have koi and goldfish in there,anyway touch wood everything is fine at the moment,the problem is when I clean the filters out,in summer I do it twice a month,in winter every 4/5 weeks,They are due a clean now,to tell the truth I am not looking forward to it because it is so cold out there,The filters are the ones where the water rise's up though the 3 different sponges and back into the pond,To clean them out means taking the lid off and pulling the sponges from it and then washing each sponge in turn in buckets of pond water,6 sponges all told and about 15 buckets of pond water,so the question is what do you think about these new pressurised filters where you just throw a switch and turn a handle to clean it out,Thanks