# of females and tank size question

I would like to combine three females in the same tank. They will not be breeding, and weights are approximate- 62g (Tremper BLIND), 50g unknown morph, and 10month old jungle I posted in an earlier post (55g) My question is, the first two currently share a viv, either 25 or 29 gal. I can either add the jungle to that (and re-arrange) or put all 3 in a 20L. Or maybe I could add the girl w/o re-arranging while they are brumating? I hate yto rearrange on the blind girl, but I've got to add to the group.

Three geckos in a 20L would be the maximum IMO. I keep my 1.2 groups in 20L without problems.