Mike: Thanks for the kind words and I'm pleased you enjoyed your marathon read. Best of luck with the upcoming tank endeavor.
Knyght: You like that one too, huh?
This is a little late in posting but better than never. We headed north for the holiday weekend (4th of July) and a fellow club member/friend was kind enough to visit the tank to verify all was well. But, in fact, all was not. On Sunday, he and his Mrs. came in to find a "slight" sand storm in the tank. The culprit turned out to be slightly amazing and yet completely unexpected, at least to me.
The typical sand depth is around 2 to 3 inches toward the tank front. Here's a couple shots where the sand had been shifted about a bit:
Yes, that is the bottom pane of glass seen there. :eek2: So you ask, where did all that sand get displaced to? Here's a graphical representation to answer your question:
So now you're thinking that there must have been a return line that came lose and aimed directly at the sand bed, right? Umm... not exactly.

Here's a shot of the little culprit:
Yep, that's right, a little snail decided to make its way to the Penductor and probably was happily sitting there until the closed loop came on. Unfortunately, he lost his life for the sheer force of the water which must have been the equivalent of a fire hose at full pressure blasting a person out of a cardboard box.

Unfortunately, times two, the remaining shell was lodged in place just in front of the nozzle in a position that was enough to disrupt the water flow and send it in a not-so advantageous to the tank direction. It now looks like I will be creating some anti-snail guards for the Penductors in an attempt to prevent this from happening again. So what's the moral here you ask? Don't think the simplest of small events can't have huge ramifications. So what's the irony here, you ask? This little event just had to happen when I was away for a few days. What are the odds?

The good news is all is back to normal without any casualties... umm, except for the snail, that is.
Joseph