Ah my tench comes out at 5ish for an hour the goes back in the rocks,the chub he did hang around with the minnows and roach but now has distanced himself and hangs with the tench as for the ice cubes id freeze a 2ltr bottle with there water and it does knock the temp down by 2c just member tho take water out before ice goes in lol(tank overflow.....doh!) theres a nice place near me its about 3ft wide you just have to bang your net in and theres all sorts in there roach,chub,pike,perch,dace,minnos,sticklebacks all sorts about an inch long you get the odd half pound roach, i went wading just to get some water plants for tank, one of my mates has a 6and a half pound pike in his tank beast of a thing eats like 15minnows aday, id love to keep a pike but havnt got away of keeping it when it gets too large,chub/pike fave fish, have your fish grown to the size of the tank or will they grow more? people say fish grow to the size of the tank but im not sure and ill try to find away to upload pics to this site via phone