Low Limits

I have been playing well the last few months and i decided to move up limits but now am on a downswing and decided to cash out alot of my bankroll and try to play real low limits like .25/.50 limit and .05/.10 NL is it really possible to build a respectable bankroll at these limits? Ive heard of people building from 50 to 500 in a couple months but it just seems impossible, especially at limit. What time frame would someone need to make that? Any help would be appreciated.

I moved from 10NL with $100 to 50NL with $1,000 in about 3 months playing 6max the whole way.

Those levels (10NL and 25NL is you're playing a site like PokerStars) are very very +EV and you can make a lot more than you think in a very short period of time.

I can't say much about .25/.50 LHE because I started at .50/1 in LHE.