My pleasure - hope it helps. Credit to @Torontoke for the original idea to use cheap boot trays, since horticulture water/spill trays are so incredibly expensive. I found these particular Mainstays brand trays at Wally World and they fit PERFECTLY and snugly between the casters of City Pickers. Only other tip is to make sure they’re flat on the floor/ground on all four sides when you slide them between the casters so you don’t get runoff spilling over the lowest corner.
Yeah, I moved this 5x5 tent out from the corner its predecessor was in, and now I have just barely enough room to squeeze in on the right side of the tent, and full access from the front and left sides. It’s taking up a lot of space compared to a 4x4, but my gf hasn’t complained…too much. It’s in our spare bedroom and the only other stuff in there is our exercise equipment. Puppy also hangs out in there a lot so I’m hoping the CO2 levels are higher than ambient.
CPs hold about 13-14gal of fluffy soil when watered in, more if mounded up, and about 1.75gal of water. They’re heavy when wet (over 100lbs) so no, they’re not easy to pick up, but they can be moved out of the tent if necessary. I’m an average size guy nearing 50 and I can pick them up and move them myself, but I kinda consider them set it and forget it. If they do need to be moved, I let the rez go dry before moving. They roll fine on carpet - not super smooth, but good enough to not have to pick them up. I try to be easy on the casters when going over thresholds between rooms and flooring styles. I think the one crack I had in a rez was from being careless rolling them outside on our broken flagstone.
No matter which kind you use, SIPs are the best. My maters are exploding outside after not getting them planted until the middle of June. In their CPs I decided to do a cover crop of alfalfa and fenugreek seeds I had laying around instead of a plastic cover. So far so good! My first time doing cover crop in a pot.
♂ 
The Beave looks great, just keep it away from Eddie Haskell 
