Started from the bottom now I’m… progressing

[Splatoid]

Yeah I had the same problem.

 

[greenmobster440]

Back then I used Ionic nutrients veg and bloom formulas with tap water and pH down. If ya just follow the manufacturer suggested feeding and tweak it from there your usually going to be successful.
The tubs I just syphon off the fluid once a month to keep things fresh. Top off with fresh water as needed and feed them once a week.