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Leaf Zone adds iron and other nutriments to water to grow plants well.
It is safe with aquarium fish.
If your plants won't grow in your fish tank, it is likely the water is lacking iron.

Seachem ParaGuard 2020-10-27 14:29 UTC

This product treats multiple illnesses in aquarium fish.

I've used this with freshwater guppies. In one particular tank, I have many endlers, ottos, corys and live plants. ParaGuard seems to cure ich/ick. I used a very low dosage, about half and sometimes less. I treated them for a month so far and they appear fine. No more scratching on rocks or bloody gills.

Note that when fishes have bloody gills, it is likely already too late for them. You need to catch them early. If you see one fish scratching on a rock, treat them immediately. Expect some dead fish.

Air Plant Attached to Rock 2020-10-26 19:51 UTC

I have attached an air plant to a rock using "J-B Weld WaterWeld".
I placed this above my fish tank.
The other two plants are (left) ficus plant and (right) peace lilly.