Ok, revisit time, Sorry bud, Got busy with my own tanks earlier & didn't really have much time to read the last few pages. So it was a super skim.
So, Sump issues, not good. You mentioned your redesigning the sump stand, why is it not level the first time bud? Your craftsmanship, the floor, or both?
Was first go purely an unforeseen design flaw?
Shooting in the dark by saying the weight of the intake tray is held up by the side walls leading to this?
Option exist to build a flow-able box core to support the weight instead?
The question i should be asking is - how thick is the glass & what turnover per hour caused this, and follow on from that, at what percentage of future operating capacity where you running at?.
Cause If not simply flex from above, & this is showing backpressure in its channelling design this early, then youve got an issue that will a) prompt a redesign, or b) requires a diamond hole saw to assist.
Second leak, unless its due to the initial stress crack, in the corner you said - is usually covered by builder warranty. Even if its custom, that makes it even more important it falls under this banner. Please tell me such a thing exists over there?
Talking personally, if I had this issue, & transportation was a logistical nightmare to begin with, id have the builder roadtrip it at the next available opportunity.
We're not talking some guppy with an all in one jebo here, this is the start of big boy territory, and as such commands attention.
If there's anything i can assist you on, yell out ok