hi guys..iv been given a couple of pieces of large coral for my tank..is the effect on the ph levels easy anoth to control with ph up and down..or is it to bad to control?? cheers chris

I have no real idea as for how much the coral would raise the pH of the water, but I'd put it like this:
If the coral alters the pH so significantly that you'd need to play around with pH down or up, I wouldn't do it.

You need to keep in mind that say a pH of 8 is not 1/14 higher than pH 7, but 10 times as high. And pH 9 is 100 times higher than 7. At least if I remember correctly. You can't avoid strong fluctuations if using such pH adjusting stuff which isn't good at all for the fish IMO, better to keep it stable.

thanks metoo,im not to sure how much differance it makes..just that a guy in the pet shop one day said something about it raising the ph level..mite just keep to the rocks i wont to get,cheers

ive done th coral thing b4 and i will assure u that it messes with yr ph(ph goes sky high).

boil it up for a while and stick it in a bucket of water and then do a test on the water in the bucket to see what effect it has on yr ph level.

sounds like a good idea vbaby.il give it a try and c what happens

sounds like a good idea vbaby.il give it a try and c what happens

If the coral has been in a saltwater tank dont use it. A long time ago a friend of mine set up a goldfish tank and was given a piece of coral from her friend. Her goldfish kept dying after a few weeks and we worked out it was the coral. It must of been leaching salt into the tank

sounds like its not worth the risk hey..mite just put it in the garden bed..cheers guys for the info