Too poor to invest in another keg? I have 4 kegs, so when I have 20gallons, 5 end up not getting filtered. Not really a big deal. Pressurizing the carboy may be a disaster.
You can use a vacuum. If you attach preferably a food saver vacuum sealer to the co2 port of the keg and pull out of the carboy through a filter into the out port. I've never tried that. I would like to think the carboy could handle that amount of pressure, but not sure.
4 Brewers is great, and Adam Carolla is funny. I like the Adam Carolla show a lot because there is a new one every day and they are at least an hour long.
Ok, sorry. I didn't understand that you were manually adjusting the temp. Just thought it was fluctuating between those temps. I would say that at 6 days, your fermentation is still going and the co2 hasn't had a chance to carry the sulfur smell out.
Any chlorine in your water? The off flavors caused by chlorine can be subtle to unbearable. The more hops and dark malts you use, the less noticeable it can be.
I never liked the manual part of the vorlauf. That is the main reason I got the pump. But I run it long enough to make sure I recirculate the full volume many times over. It just feels right.