man, pothos will grow in anything, I used them for reptiles, amphibians, fish, arachnids, w/e.....they grow fast in high light with warm temps, but they still grow in low light, low temps ( I have some at 60F atm), they will grow in high or low humidity,, they will grow in soil, sand, gravel, or straight water alone. Temps-permitting, growth rate can be as much as 6" per WEEK and when you prune them, they take a few weeks to get started again, but they grow even more afterwards.
I have pieces that are a few inches with 1-2 roots, and I also have pieces that are 10-12 feet w/ over 20 roots. If you cut a piece that is only 2-3 sections with 2-3 good leaves on it, in a few weeks, out of it's overwhelming desire to grow, it will grow 2-6 NEW shoots to compensate for itself, instead of just the usual 1. My fish love the roots, they help the tank, and I have successfully maintained tanks with gravel, fish and pothos (and similar species of plants that will live in all-water) with nothing else in them besides that. No filters, heaters, bubblers, nothing. You might say they reduce nitrates.
Also, majority of the leaves need to be kept above water level, but the ones that end up submerged get eaten.