Ich with plants, inverts and corys

[CanadianWaters]

So I noticed a few of my fish had ich about 2.5 weeks ago. I upped temperature up to 86-89 F. I have been doing daily 30% water changes but I still have ich. I was hoping to get rid of it with just heat because I have a number of plants, amano shrimp, snails and panda Cory's. I'm now considering adding salt to help with cureing this. Should I just keep doing what I'm doing? Would it even be safe to add salt?

29 Gallon Long
Amm=0
Nit.=0
Nat=5

Fish:
Neon Tetra
Rummynose Tetra
Panda Corydoras
Orange Flash Apistogramma

Inverts:
Amano Shrimo
Apple Snails

Plants:
Water Wisteria
Java Fern
Anubias Nana
Green Cabomba
Hornwort
(More I forget the name of)
Any help is appreciated!