I have a couple chips external and internal on my 90, It seems fine for now dont know long term, but you should be ok as long as its not in the inside on a structural place such as a corner. Is your glass tempered? I think in non-tempered glass its not so critical. Just my 2 cents, by the way im no expert  . _________ 90 gallon tank with center overflows, 44 gallon custom sump/fuge, Tek T5 retrofit 4x54 bulbs, Reef Octopus nw200 protein skimmer, Iwaki WMD40RLXT return pump (changed to panworld 100pxx),Knop c ca reactor, PA light house controller. Click: Real-Time Stats 
^^ Testing it out! Ill add more param.. later. |