thanks so much for the advice, it is brill to have somewhere to go to talk all things fish.....
I have had this tank set up for the last 10 years and I use "RO" water which my LFS are kind enough to supply me with for 2 euros for 30 liters I add three kettles of tap water to this to bring the water to temperature and this also raises the water to a ph of 7 which remains a constant, the nitrate nitrite and ammonia rarerly if ever go above 0ppm ..
One of the things I enjoy about fish keeping is the water testing which means things rarely get out of conrol.
would it still be silly to get the rams even if i am very careful

?