In carolina discouraged

Ive jus began flowering and have beginning stages of root rot....aquashield on the way but seems like since this is my first bubbleponics grow around every corner something else is revealed...i am running a 12 pod 6plants in each 10 gallon tote bubbleponics system two airstones in each with 1000 wts hps with 42 in umbrella hood found problem to be water temp.........my question is i ve started droppin frozen water bottles in my water twice daily ....is there another surprise cause im doin this coming?
 
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