They started to break down after around 3 months I think and there has been some write ups about certain batches which may have had issues, but the LFS/Brightwell replaced them and the new 2 seem better. I just left the originals in place and tried not to move them, but having done so you can see the mess.How long were the bricks inside before they started to disintegrate?
I did not know they were so brittle.
I’ve gone with Matrix as it can’t break down as it’s rock, and everything I’ve read seems good so I’ll give it a go. The water looked very clear last night, but that could have been the ‘refreshment’ I was consuming! Lol