Thanks for all the feedback!! Well....I think you are gonna love my evaporation solution....
I am going to fill the 10 gallon sump to the highest normal level. I will then prepare two five gallon buckets with fresh RODI
water. I'll run a siphon line from the bottom of bucket #1 to bottom of bucket #2 and another siphon line from bottom of bucket #2 to bottom of sump.
The level of both buckets and the sump will start out exactly the same. This will effectively double the volume of my sump. The siphons will auto-fill the sump as evaporation occurs. I'll cover the buckets to ensure the evaporation is not consistent.
I was thinking of maybe adding some food to bucket #2 that could provide some latent nutrition for the tank.... But I'm still stumped by the fishy issue
. You really think five days without food is appropriate ? I'd be hungry!!