Adding another pair of figure 8's

[Cdrdek]

Hey everyone I'm new here and had a question! I've had 2 figure 8's now for about a month. I bought them together and there in the same 50 gallon tank. So today I just bought 2 more that are about 3/4 the size of my original pair and I REALLY REALLY wanna have all four in the same tank. at the moment they are quarantined in a freshwater tank that I will slowly turn into brackish because that's how the store sold them to me. I was thinking of treating with paragard but unsure. Can I please get some feed back asap I dont wanna see Enzo and Aakkbbar kill there possible new buddies

[Pufferpunk]

I would suggest taking the 2 older ones out & redecorating the tank. Then add the 2 new ones & give them an hour or so to discover territories, then add the 2 old ones back in.

[Cdrdek]

Now what about treatment for the new ones is paragaurd safe for them or should I not bother and I've been
slightly redecorating when I do water changes only because its heavily planted (fake) and cant get the gravel vac in

[Pufferpunk]

Do they look healthy? Eating well?

[Cdrdek]

Yes there constantly on the move and are eating everything i put in tank. Brine shrimp black worms (both live) frozen mysis, brine, blackworms, they were even eating cichlid pellets when my son through them in there tank by mistake which from what I understand they will not do I feed them twice a day and so far just blackworms, frozen mysis and brine

[Pufferpunk]

You're going to have to come up with crunchier options for their teeth:
library/feeding/feeding-your-puffers/