I have a 15 gal. planted tank that has been running for about 6-7weeks now, and I'm noticing some issues with a couple plants. For reference, the tank inhabitants are 5 African Dwarf Frogs, 3 otocinclus, 3 amano shrimp, a nerite snail, and some Malaysian trump snails (I think 2) and bladder snails.
I am using a finnex 24/7 planted+ CRV light, and I do have a glass aquarium lid (I hate it, but frogs might jump). It's at its brightest (not the MAX setting, but the brightest I have it at) for 6 hours, I'm not sure the % of each color, but I am thinking of upping the lighting, the only algae I have is some green spots on the glass.
My parameters are as follows:
Nitrite & Nitrate: 0
Note: last night I took a measurement and it said both my GH and KH were 0, but that's not possible??? I use tap water and switched from RO water a couple weeks ago, and have been doing weekly water changes? Idk it's weird?? Every other time it has been hard water, since the water here is VERY hard.
I dose 2x a week with ThriveS. Note that I used to use RO water (NOT remineralized) and recently (2-3 weeks ago) switched to just dechlorinated tap water.
Note: I do a ~30% water change once a week.
The plants that are looking a little funky
are my s. repens, which has some green dotting now, it used to be quite healthy and normal. Not every (s. repens) plant has this.
I also noticed that my hygrophila difformis is like ... "disintegrating"? Pieces are browning and then coming off in small bits. Some leaves look healthy but others are doing this weird melting stuff. I've had this plant since day 1 and it was always super healthy up until recently. A few bigger pieces have floated off.
Lastly, I noticed that my in ludwigia palustris, all the lower leaves fell off! It was in the back, right near the light, but I think it was shaded by an anubias and java fern, which I have moved. I'm hoping it does better now, but some leaves at the bottom are still turning yellow and coming off, and it's not very red.
Could it be the glass lid? It's new, but the hygrophila difformis has been suffering since before then...idk.