Topped the OG Kush at the 5th node. Royal Runtz still smaller despite being 1 week of older.
Just water for now. Bought Guano Kalong grow liquid just in case of deficiency but not used.
Upped the CO2 from Airbombz, noticed the can was empty!
But getting a co2 canister from AliExpress for next CO2 additions, the Airbombz cans are non reusable and expensive.