ph 8 or 9? Are you really sure about that? I wouldn't imagine they could survive a ph that high as such small plants.

If your ph really is 8 or 9 you should flush it with plain ph'd water instead. PH of about 6.

Also your plants look a little droopy. Is this from the watering or had they been droopy for a while.

I had a similar issue in some of my plants and could never figure it out because the plants seemed too small vs what the actual problem was.

My plants were rootbound. Root mass exploded but the foliage wasn't catching up.

Just a side observation I had about your plant that you may want to look into incase the droop isn't being caused by your most recent watering.