You really don't need much fertilizer like anewibe says. It really depends on what the tank size is and what you have stocked.
That does really matter I have medium lighting and my plants boom if it's very low lights then you probably will need some fertilizer. Even low lighting you may not need it. I'm running my 30 gallon no fertz with a desk light since my light broke and the floating plants are perfect maybe a Bit slow growing but still very healthyI don’t have a strong light so I’m looking at different options
Last edited: