Look at this pic and help me diagnose the problem please

[Mrbudkisd]

Here's that chart.

Thanks for this......:rasta:



SSSSOOOooooooo..................... whats the easiest safest way to swing the ph up to 6.4? Is it the hydrated white powder lime that is watered in?

Should I be going today and buying some to water in the next watering which is tommorow if I want...???

Budkist