I wont be able to get a heater till tomorrow so will he be ok to stay in the tank overnight?
will get a pic on as soon as i can
Even if you can put him in a container that can float on the surface (ie tupperware) that would probably help until you can get a heater.
It sounds like columnaris... I just diagnosed a case of it in one of my fish actually. Basically what it boils down to is that there are 2 diseases which manifest as white fuzz: One is true fungus, one is actually a bacterial infection known as columnaris, or body fungus. Since true fungus is very rare, your safest route is to treat for columnaris, then if it doesn't clear up that means its a fungus. Don't waste time by treating for fungus first, because if it is columnaris it will probably be too late by the time you rule out fungus (columnaris is really lethal and fast-moving).
I used maracyn and maracyn 2 with great results... the fuzz was gone overnight! Now all thats left to do is finish off the rest of the treatment (4 days).