Help with advice about poorly frogs

[Lousfrogs]

Thanks for replying Carlos. I feel awful, I didn't realise I needed to change the main water so often. Some of the frogs didn't even use it, but used the feeding bowl ponds, which I replaced the water twice daily. The spring water I use doesn't contain any additives, and I guess I have to trust it actually came from the spring they claim it did, as with all spring water. At its hottest, it reached 30degC in the tank. I put the spring water in the fridge and used it when I did the water changes, getting all the frogs to go in there to cool down, although they were often in the feeding bowl ponds. The plastic looking frog passed in the night, I took some photos yesterday, when shining a torch down on him, his sides were filled with a clear fluid. The 3 healthier ones still seem OK, especially the small one. The one with the ulcer on his eye seems a tiny bit better, but is refusing to eat, and the one with the swollen leg is still very swollen (one photo I took showed 2 small yellow patches on the underside of the swollen thigh, and the thigh is very red, he has become very unhappy and now also refuses to eat. They are only 2-3cm in size, so I can't imagine how I could ever force feed them. I can get both Melafix and Pimafix from my local pet store, so have bought both and will await your instructions. Both are by API and the Melafix is 240ml and the Pimafix is 118ml. I will also get the Lamisil at the shops this evening, but won't start any treatment until I hear from you. I have bathed them in a saline solution twice a day for the past few days - should I continue that too? The pictures show 1. the frog with the very swollen right leg and 2. the frog that I thought had red leg, he no longer has red thighs but his skin has remained pinkish, almost copper gold in some lights, and veins are visible beneath his skin. You can see how different he is to the other 2. He is one of the most active frogs though.