I previously rated these at 5 stars, but after using for a little over a month and a half, I have to change my review.
I want to love these so badly. They look great, are of good construction, and fit plant pots perfectly. I would give it 5 stars if not for a major issue.
The Easy Planter is hollow and traps water / gas.
When you place it in the tank, you have to flip it upside down like a cup to allow air to escape and water to fill the hollow space. Not a big deal. However, the Easy Planter doesn't allow this trapped water to circulate with the rest of the aquarium water. It becomes stagnant and trapped gas accumulates.
I have 2 of these in a bare bottom 10 gallon and I change the water once a week to once every two weeks. I change 75% of the water at each change.
Even in that short period of a time, and replacing that much water, and in a bare bottom, I can not avoid the trapped sulfur gas.
I drilled a 1/8" hole in the top of one planter, and a 3/8" hole in the top of another planter. I hoped this would let water move up and out of the void instead of being trapped. No luck. I still get the sulfur gas build up.
Now I just have these sitting on the shelf unsure of what to do next. Such a bummer from a product that is almost a home run.
Seems like a lot of people really love them. I wonder if they are doing something to avoid this gas build up or are just unaware of it.