Edit: So, uhh... after posting realized I have been a long time lurker but never posted lol, so hi everybody!
I got started with a planted tank about 5-6 years ago with a 30g breeder and a 78 watt t5ho fixture, and basically had great luck by setting the tank up next to a sink, and doing a 30-40% water change every time it evaporated enough where the noise was bothering me. I started off with a fist sized clump of java moss in that tank which nearly carpeted the tank in a huge bush of the stuff before many life changes ensued and I couldn't keep the tank, so I have kept the java moss in a 10g tank for the past 3 years. It's always been under some sort of light, but has generally been neglected. I have had a problem with cyano for nearly the whole 3 years. Moving a lot I eventually left the tank at my moms house where it's maintenance dropped to pretty much nill.
Not being particularly proud of my poor tank husbandry for the past 3 years, lets fast forward to now. So I picked up my tank a few weeks ago which had about 6 gallons of water in it, dried cyano on all sides, and a stalled HOB filter. I wound up emptying the tank, buying a bunch of new plants, and kept the java moss seperate (kept having outbreaks of cyano stemming from the moss), rinsed the substrate thoroughly, and started clean. After about a week in an unlit bucket rinsing off the java moss every day or two to rinse off the dead bits as best I could, I added it back to the tank. Here's how it stands today (cycling, have some diatoms right now):
Started off with the easiest combination of plants I could think of: 2 guppies, an amazon sword, some anacharis, java fern, crypts, and of course the java moss. I also think the thin bladed plant is a cyperus (correct me if I'm wrong). This is in the 10g still, and I put a 15w 5500k par38 LED from lowes on it.
Don't remember what substrate... eco-complete maybe?
Amazon sword looks healthy but isn't really growing, crypts have had a lot of new growth, anacharis has had a lot of new growth, and the moss is looking a bit dull. Any advice on things I could do to help revive the java moss or stimulate the sword? I wasn't sure how the cyperus would do in this tank anyways.