Did first flood and drain ph went from mid 5s to 7? what to do?

ph was mid 5s last night...this morning it did its first cycle of flood and draining of my 9 clones in 6 inch rockwool cubes.

I presoaked the rockwool in ph adjusted water for a day before putting clones in them

last night flushed the resavoir added new water, added nutes..adjusted ph , now today its way off. Any ideas why?

could be that part of the reservoir wasnt stirred up. Put an airstone in the Res at the bottom to keep the nutes agitated.

got two airstones in it actually..ill check it again in a different spot..could i of not flushed the rockwool good enough before putting them in the tray?

still 7 and the water looks cloudy and not clear like it did yesterday..wtf? can barely see my water pump

I put a fishpump in mine runs 24/7.

+ My resivoir can change everynight man just keep ph-in it. Your table can a different ph and you may need to flood it twice It's like agitating/stirring the table.