My brother woke me up at 6:45 AM on a near disaster...
The second he said "there's water on teh ground" I jumped like crazy and ran to the living room where the tank is. Needless to say that I slipped on water bumped into a closet and sprained my back...
floor was flooded with water that had drained towards a drain on the balcony after filling the living room and corridor.
checked the sump and there were no leaks however the return area was at lower level, skimmer partition was also at lower level which was very weird as there was sign of leak in the skimmer partition...inspected the frag tank which was also at 3/4 level and then notidec that a drain tubing which had a lock from inside was draining the tank. a smooth line of water was dripping out of it which is always better than having a leaking seam or a crack in a tank.
removed all frags from frag tank and drained it all. and changed that "tube lock" (not familiar with plumbing parts names in English)
Whats really wierd is that the plumbing was done since more than 1 year and this has not been manipulated so i'm really wondering why it cracked.
On the brght side I'm very lucky that this happened while I was at home as I've been traveling non stop for the last weeks.
I'm also very lucky that I was able to clear some of the water from the ground especially where the wooden furniture is as that would have rose some serious questions about how safe a tank is in my new appartment....
finally as I have stated before I had failed to do water changes since 2 months so the night before I mixed around 30 G of water for a water change and so had water available immediately to refill the tank...
after I located the falty part I understood the sequence of events to explain the drained partitions:
rag tank leaked for that tubing and was getting refilled by it's supply pump in the skimmer partition however that didn't explain the drained return partition? so i filled the return partition leaving the skimmer aprtition empty and noticed that water was also leaking on teh seams of the baffles from teh return partition to the skimmers partition. normally this is not an issue as when water levels are full on both sides allw ater would go through the baflles instead of through this small leak however I did clean the seam and resilicon it from both sides so now things are fine.
This will for sure add some stress as I have 4-5 unused holes in the sump and frag tank (initially intended for connecting an external Carbon and phophate reactor as well as a drain for water changes that is not used yet and acouple of holes for a CL in the frag tank... all these are closed by the same type of tube lock which failed so I believe I'll be adding a second one to have one lock from inside and another one from out for more security. once tank is moved the sump and frag tank will be changed and I'll make sure not to have any holes I don't use. the biggest concern is a hole in the bottom of the tank meant for a mechanical filter that is not used...
Still considering the possibility,advantage of having a humidity sensor under the tank that would cut the power from all pumps circulating water between different parts of the system so that if any fails the damage is contained.
Luckily none of my my pumps was damaged