help, my dog ate 35 seachem aquarium root tabs, will he be ok

I have one pair of Bolivian rams in my 36 gallon planted amazon tank along with some Corey cats and some cherry barbs and I was wondering if I would be able to add a pair of Cacatuoides in the tank. I plan on turning the tank into a high tech heavily planted tank so there will be plenty of cover I also have some small flower pots set up as caves. So, will this work? any advice and feedback is very appreciated.

I just bought a few Argentine swords for 2 $, but I do not know any thing about them. Any info will help !

I have a 10 gallon dirted planted tank with small tetras, is it bad to have the air stone in the tank because of the loss of co2?

My Australian rainbow fish seen to be aggressive with all my fish and they have a black stripe down the center. Is this normal ?

I have a tank that has been running for about 2 years now and I was looking into dirting it, do I need to drain the tank then add the dirt or can I add the dirt with the water and fish still in the tank?