Hi,
They are not looking good. The coir u r using is fine grade sawdust. You will need to make a mixture of 70% perlite and 30% dust because new coir that fine almost always have major ph issues, terrible drainage, and salt buildup.
To avoid these problems, forget the coir and use 50% perlite and 50% vermiculite, this will alleviate a lot of headaches for you in the future. Repot your plants into this new mix.
Whenever you mix ingredients for a new medium, you need to stick it in a big garbage bag and really shaking out so it's all mixed up. Your pots need to have drainage holes in the bottom. What you have right now is not properly mixed and it does not have enough perlite to fix the Coco problems.
Use Earthjuice organic Veg fertilizer and ditch the tomato plant chemicals. With chemicals it's very easy to under fertilize or over fertilize and kill them quickly. For a new grower, you have to keep things very simple and use a method that is guaranteed to work. Good luck!
