Hi reefers. I am so disappointed. I've been cycling my Waterbox 15 for two weeks and was doing a water change (used tap to cycle to establish rock, long story) and just noticed when refilling with fresh salt water that the black glass that separates the aquarium from the filtration chamber is cracked!!! I have no idea how this happened as the tank has just been sitting there with no filter sock even inside while it cycles. The tank itself is not leaking and there are no other cracks than in this one space. I was hoping to get my two clowns today from my LFS. If the tank itself is not leaking and has no cracks to the exterior, is it safe to add them? I was on the fence about doing the Waterbox 20 cube... I guess this just made my decision easy...