API ROOT TABS Freshwater Aquarium Plant Fertilizer 0.4-Ounce 10-Count Box

I always use these and never had a problem. My plants grow so nicely and so easy to put in not to big and a great price.

I cannot recommend these enough I put an entire pack in my 20 gallon next to all my dwarf hairgrass and within 2 days they all sent out runners that are already poking through the gravel, supports healthy, non yellowing plant growth, they do make the water a bit cloudy so put them in fast!

These worked really well in my planted aquarium, it's been over a month and the plants are all looking green and growing, would definiely recommend and would buy again as needed.

Seems to do it’s job! I don’t like that the tab immediately starts dissolving the second it touches the water, so you have to be quick putting it under the sand.

Must Have if you are growing plants..

These things dissolve as soon as they hit the water. You have to mad dash to shove them into the soil, but you still end up with a cloud of fertilizer in the water, and white particle dust all over the place. You end up feeding algae as well as your root plants. It's a bummer to have to do a water change every time you put these in the aquarium.

Plants aren't dead, so I'm assuming it working. My plants are nice and green days after finally planting them in sand substrate. They're a little expensive, but I'm glad I bought them to get a jump start before I switch to a liquid fertilizer.

Just as described