I'm at my whit's end!

[RMP]

So I wrote here last week that a fuzzy slime overtook all of my plants. It was probably driftwood fungus and so I decided to do a major water change after medicating with Maracyn 1 and 2. I removed all the driftwood and did a 70% water change. I found under the driftwood TONS of decaying plant leaves and slime blobs on them. I pulled every plant out and only put back the ones without decay.

Here's the problem:
As soon as I finished adding the RO water, all the fish were flashing. Also without the driftwood in the tank, the PH went from 6.5 to 7.5. The chocolate gourami now has cloudy eyes. One keeps spiting up his food. Even the hardy minnows are flashing. It has been 24 hours and still flashing. Ammonia, Nitrate, and Nitrite all at 0.

What is causing the flashing and how do I stop it? More water changes? What do I do?
Thanks,
Ryan

[Lady Hobbs]

You can add a whole tree and pH will not change that much. It is very minimal the effect of driftwood on pH and generally not at all.

[RMP]

I had 5 pieces in there. It had been testing lower with the wood in there, and now higher. Even so, should the fish continue to flash? I understand the chocolate gourami's being a delicate fish, but even the hardy ones are doing this. I haven't lost any neon tetras or catfish, so another proof the ammonia didn't spike .


The tests I use are API liquid tests...

[RMP]

Tank wa around 6'5 ph and now 7.5 without the wood. I had a ton of wood in the tank the water was a dark yellow color now clear without the wood