Dont buy plant with leaves that id variegated such as with green white / green red. Leaves with pointy end meant to drip off excess rain water. Will be able to stand upright if you lift it out of water.
These plants are mostly terrestrial plants that dont do well under water and will usually die after a few months. Waste of time and money and effort.
In my opinion, best not to keep balloon mollies or any genetic defect breeds for the matter.
A genetic defect cause the spine to curve and compress the body into a balloon shape. Then line breeding fix in this genetic defects.
The fish swims slow, suffers from many health problems such as constipation etc, live in pain and stress, hence dont live long. Usually lifespan less than 1 year.
Why create a market for farms to earn money base on suffering of such animals. When we keep pet, i feel there is an unwritten contract between us and the animal, that we will give them a good and healthy life.
K1 media is very efficient because of oxygen coming to very close contact with the aerobic nitrifying bacteria on the k1 media. Turbo boosting these bacteria at removing ammonia and nitrite.
But k1 media has low surface area compared to ceramic rings or sponge. So you really need to use alot of it to be of any meaningful purpose. This result in a need for sump to house the large volume of K1.
If you have 2 or 3 feet tank. Dont need k1. If you have 4 or larger tank and have high bio load, can consider k1 for maximum efficiency but at higher cost.
Cant advise when i dont know the fish, the food type and the feeding frequency and circulation efficiency of sump.
But you can start by filling your sump with 40% volume of k1. Monitor the color, if the k1 becomes dark brown, then you need to add more k1 to say 60% volume. If k1 turns light brown then you can continue with the current amount.
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