Here's a long one. Please any info helps I'll attach pictures of my setup
So I might have a leak. Last night about 4 cups of water went missing in about 4 hours.
Before this happened, my last recorded salinity was 1.025. And My tank has glass lids that cover the entire top AND a canopy so evaporation is low
Every night for the last 2 months at 9:30pm I fill up the sump with 4 to 5 cups of fresh water to combat evaporation. Last night, at 9:30 I filled the sump with 4 cups of water. 3 and a half hours later at 1am I was messing with the skimmer and heard air entering the return pump due to missing water (4 cups worth maybe more, I don't refil when air hits the return pump so maybe more like 6 to 7 cups!). I shut the system down and checked:
Tank corners
Tank walls
Tank base
Bulkheads and piping
All around the stand
Nothing.
Then I checked salinity to see if it was higher from Evaportation and it was at 1.026 or 27 so I figured that was a good sign.
I checked around the sump. I was playing with the skimmer so there was water on the bottom but I noticed a slight wet spot behind the sump where I wasn't near. So I ripped the sump out and put it in my bathroom and refilled it with tap water and marked the water level with Blue painters tape. 12 hours later there was the expected water loss. Not close to 6/7 cups like last night.
The only difference now compared to the 2 months is I replaced the dual-headed lock line to a single headed lock line. Other than that nothing has changed.
Do you have any idea where I could be missing the leak? Literally nothing in view is wet!
Here's a full list of what the tank looks like
Tank info:
90 gal tank 20 gal sump
I removed the sterilizer weeks ago and it was still consistent to 4 cups a day
78 degrees F.
Normally 1.025 salinity
No livestock
750 gph return pump
So I might have a leak. Last night about 4 cups of water went missing in about 4 hours.
Before this happened, my last recorded salinity was 1.025. And My tank has glass lids that cover the entire top AND a canopy so evaporation is low
Every night for the last 2 months at 9:30pm I fill up the sump with 4 to 5 cups of fresh water to combat evaporation. Last night, at 9:30 I filled the sump with 4 cups of water. 3 and a half hours later at 1am I was messing with the skimmer and heard air entering the return pump due to missing water (4 cups worth maybe more, I don't refil when air hits the return pump so maybe more like 6 to 7 cups!). I shut the system down and checked:
Tank corners
Tank walls
Tank base
Bulkheads and piping
All around the stand
Nothing.
Then I checked salinity to see if it was higher from Evaportation and it was at 1.026 or 27 so I figured that was a good sign.
I checked around the sump. I was playing with the skimmer so there was water on the bottom but I noticed a slight wet spot behind the sump where I wasn't near. So I ripped the sump out and put it in my bathroom and refilled it with tap water and marked the water level with Blue painters tape. 12 hours later there was the expected water loss. Not close to 6/7 cups like last night.
The only difference now compared to the 2 months is I replaced the dual-headed lock line to a single headed lock line. Other than that nothing has changed.
Do you have any idea where I could be missing the leak? Literally nothing in view is wet!
Here's a full list of what the tank looks like
Tank info:
90 gal tank 20 gal sump
I removed the sterilizer weeks ago and it was still consistent to 4 cups a day
78 degrees F.
Normally 1.025 salinity
No livestock
750 gph return pump
Last edited: