m0useanswered grow question 5 months ago More fertilizer, its hungry.
Ph is good, could go up to 6 but 5.8 is fine.
Your solution temperature could be lower as well. you want to keep this under 21c or things start to grow in it a little to easily.
When you mix different brands of nutrients you can sometimes cause them to react, do a test amount and confirm its not snowing in the solution or getting foggy.
Good Luck!