04-12-2010, 12:26 PM
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Originally Posted by catfishtabbi
Sooo coool ! Where did tou get them ? Your pic's are the first i've seen or heard of them. I wish i had the energy to keep goldfish and the proper ph. So,were they expensie? When were they availabl? Good luck with them.
Crushed coral! I live in Vancouver... the softest water in the world. The pH is at 7 but GH and KH are 0. When I gave my water stats on a goldfish site the commented that they were surprised by goldies weren't dead! So I got myself a few handfuls of crushed coral from a local hobbyist. If you're stuck you could always just buy a bag of crushed coral, its not that expensive and will last you forever. Some places also sell it in bulk by weight.
The coral made my water from pH 6.6 and GH/KH of 0 to a ph of about 7.8 and a GH/KH of maybe 3-5 degrees. I just put a handful in an old nylon stocking and keep it in my filter. When I do a water change and bring the pH down, the acidic quality of the water starts to dissolve the coral which brings the GH/KH and thus the pH up to normal again. Great stuff!
Depending on how acidic your water is you will have to replace the coral every once in a while when it has completely dissolved but corals cheap and a handful in a 50g tank will last for ages under most conditions.