18C - Medaka Tanks, White Cloud Tanks, CPD Tank.
20C - Guppy Tank.
25C - Community Tank.
27C - Betta Tank.
Most plants seem able to thrive in all of my tanks but some standouts that really didn't like the room temperature drop down to 18C are S. Repens and some of the smaller Java Fern variants. Everything else either stopped growing but survives or grows.
Some standouts in my 18C tanks are Pearlweed (pretty much hasn't changed its growth rate), Rotala Rotundifolia, Hygrophila Polysperma, Helenthium Tellenum Green, Eleocharus, and Eleocharis Parvula.