What lighting do you have on the tank right now and what do you consider moderate light? My first thought would be that it's a lighting issue (considering
good times!! good times!
OK, but I'm not sure what that has to do with it...
The regular bn plecos are very common & shouldn't be more than $2.00 each at 1.25". I found a 10pk on ebay for $24.99 shipping included &
I had a 29 with a similar stand at one point and it held up fine