Audio Desk Record Cleaner

Supplied fluid only, with reverse osmosis water.

I've been using mine with just reagent grade water and no additive at all. I used the supplied additive until it was gone. I find it to work just as well or better without it. I certainly may try the additive again and wouldn't recommend experimenting with other additives. I think I would only use reagent grade water if going with no additive. Because of it's purity it's a very powerful solvent(actually would be dangerous for consumption, not that you would ever drink it). It also leaves no residue behind. Not so sure about residue from the additive. I know both ways work very well. For now I figure simpler(and cheaper) is better.

Before investing tons of money, I would try Spin Clean Record Washer ($80) and wood glue method (Franklin International 5005 Titebond II Premium Wood Glue, $12 for 32oz, good for cleaning 100+ LPs).
For LPs looking clean but generating pops and other noises, I use wood glue.
For LPs looking seriously dirty, I first use Spin Clean and then wood glue.
2/3 of salvaged records (bought bulk from eBay and garage sales) turned out to be very listenable with these two methods. I also use roller cleaner (In the Groove Record Cleaner) each time before playing.

As I mentioned in another thread, you could build one fo about 1/10th cost of the AD system.
http://www.diyaudio.com/forums/analogue-source/218276-my-version-ultrasonic-record-cleaner.html