With only 1 limper I dump weak suited gappers in the SB.

I also think the pot is too small to try taking it away on the turn. All you've lost so far is 1 SB, I don't see any reason to battle this pot away from anyone. Especially when you're against loose players. For all you know, someone else has a 7 with a better kicker, or an 8, or maybe a 9. With the pot at only 1.5BB, I'm fine with checking this through unless I improve.