fusarium wilt

I'm growing a rainbow belts 2.0 plant and it was doing well until this last water change. I bought a clone with 10-12 nodes and after a week of letting it acclimate to DWC I topped it to 7 nodes. I let it veg another 2 weeks before starting to train. All I did was use bonsai wire to help bend...

First: my area is very humid, overcast, low temps and to top it off... my house blocks the east so the sun takes a while to fully hit my garden... So a while back I got a few doz tomatoes in a tray from my neighbor... kinda late but what the hell... I planted in 3 gal pots and most really took...