Other things that can cause leaves to burn like that are
fertilizer or salt burn. The leaves on the bottom look more damaged than ones on the top. Usually the leaves most exposed to the sun will get burned. If they are up against a wall, the burn should be mostly on one side. I take it you did move the plants?
Don't fertilize stressed plants. You need to identify the stressor and treat that first. Nutritional deficiencies are very different.
Water well. Make sure you have good quality water. Use a water filter for your hose if you have a lot of salt in your water. Rain water would be better. When you do water, flush thoroughly to leach out salt.
The pots look a little small. If the pots dry out too fast leaves usually will first wilt and then dry and curl up, yellow and then drop. You have a well drained mix, but you would have to water enough not to stress the plants.
I would think about repotting into bigger pots when the plants are looking better. I would not do it now unless it was desperate. Stressed plants don't need more stress.
The type of pot and media you choose will depend on your situation. Ideally the pot should completely dry out in 2-3 days. If it is still wet, it is too wet. If it dries out daily, that is fine as long as you water it daily. The pots also need to be sized to the plant. If it is drying out too fast, then up pot it and add some organics. I don't use potting soil for citrus because they need air space and organic mixes compact. I do use cinder, but it holds no nutrients and holds only a small amount of water. I don't mind having to water every 1-2 days and monthly feeding because I don't have to repot because of media compaction or breaking down. 30 year old trees in pots are hard to repot or move. Grapefruit and Meyer lemons are the most troublesome since they need very large pots. Dwarf citrus take to pots better and don't try to breakout as often. I have a couple of citrus trees that I have to cut down because they have gone to ground.
https://www.kellogggarden.com/blog/gard ... s-in-pots/
The terra cotta pots in joe12 post look good. I would be careful about terra cotta pots in summer heat. They can get very hot. In the summer time I like to insulate pots by grouping them with other pots to surround them or double pot them so lessen heat transference.