Read your entry just now. If the gym maxes at 75# dumbbells, three things come to mind:
- go higher reps on the dumbbell rows. 3 x 5 is great but if you're not at 85-90% of your 1RM it's not really that productive. No more than doing 3 x 10 with 50% of your 1RM, you know? So you could just do these rows as higher reps. Match the workout to the gear.
- bring your own adjustable DB handles if the gym will let you. If not, see if they have one of these:
...and load it up and use IT as a dumbbell. I used to one-arm row and do sidebends with one of those. Got to watch the foot position more but it's easy to load it up. I prefer those for some "dumbbell" exercises because of the hand position.
- Bug the gym management about heavier dumbbells! "I love to come here, you guys are the best, but I need some heavier dumbbells...they're so cheap, I'd really appreciate it, I don't want to go somewhere else..." Might help. Or get them to get some adjustable bells for you!
And dude, you hijacked my comments thread! Honestly, I don't know with rows. "Pendlay Rows" are the ones where you get horizontal to the ground and de-weight the bar between reps. The usual bent-over-rows are less horizontal. But I only do BB rows in complexes, so I do the less horizontal version and do them light for reps. When I go heavy, I always go with one-arm dumbbell rows.