Sorry to hear that classic-chasis.
1. I have used melachite green before: on aros (with scales) and on my RTCs. Follow the instructions for use. It will kill all the plants (so you might wanna take them out).
2. Heaters are widely availalbe in Laos and in Thailand. They are used to treat sick fish. I use heaters in all but the largest aquarium (to be changed this winter). I don't unplug my heaters even in summer. They do regulate temperature by ensuring it does not fall suddenly (i.e before rains and all that).
3. your problem could be just as Brian said due to a phase or due to some tap water issues - i assume you use water conditioner.
Good luck bro
PS: sorry for loach lovers but i would concentrate on your RTG - if you are worried then move the loaches out first
1. I have used melachite green before: on aros (with scales) and on my RTCs. Follow the instructions for use. It will kill all the plants (so you might wanna take them out).
2. Heaters are widely availalbe in Laos and in Thailand. They are used to treat sick fish. I use heaters in all but the largest aquarium (to be changed this winter). I don't unplug my heaters even in summer. They do regulate temperature by ensuring it does not fall suddenly (i.e before rains and all that).
3. your problem could be just as Brian said due to a phase or due to some tap water issues - i assume you use water conditioner.
Good luck bro
PS: sorry for loach lovers but i would concentrate on your RTG - if you are worried then move the loaches out first