Baaad PH help!!!

So I have these clones that i transplanted and now they are actual plants. I fed them about 1.5 hours ago with about 3oz of nutrient solution. They are in a peat based mix. I forgot to PH their feed. I recreated the mix and it was a deep red after i added the ph indicator solution( somewhere under 4.0). The only reason i found this out is because the new leaf growth started doing the ever dreaded Ram Horn curl. So I've flushed them with a lot of plain PH'ed water./ Now should I add some more feed since this is the day for them to get fed?