While I was out of the town last week, my return pump died. Apex shows temp dropping to below 60 around Tuesday at 12pm. But I didn’t get back home til wed around 5pm. (And this was purely out of luck due to catching a flu while in New Orleans for work).
Apex shows temp drop on Tuesday around noon. Came home Wednesday late afternoon and return died again next day dropping the temp of the tank again.
So the tank was running without sump and at very low temp for about day and a half while sump was being cooked.
I came home and the tank was white as snow. (ESV 2pt dosing at 18ml per day). I have kalk dosing at 3liter per day into the sump. So kalk was being added into the sump. 2pts into the main display.
Tank was super cold and the Sump water was boiling hot (i have the temp sensor in the overflow box and the heater in the return chamber, the heater kept cooking the sump). Vectors s2 Return pump (bought brand new July 2024) was not running.
So I wiggled it and it started to work again. So I just went to sleep trying to get better.
Next morning, the return pump was turned off again and the tank was white as snow again.
Realizing that the return needs immediate attention, I got old Innovative Marine return pump to replace the vectra pump for few days. I went and got the new vectra pump from Lfs yesterday and the broken one now heading to EcoTech for service under warranty. The inner pump don’t spin “freely” at all?!! I assume the magnet is the problem perhaps.
I went and took kalk and 2pt off line for about 3days. I lost few tiny frags and few corals are paled out but the damage was minimal.
I got lots of dust (probably die offs in phosphate) on the glasses than before.
LPS tank - was not effected at all since it’s a separate system.