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Re: glass affecting pH
I don't think the substrate can be the problem - it is 3/4 sand/red clay mix
soil from my garden, mixed with 1/4 sphagnum moss peat. As far as I know
neither of those things leaches basic compounds into the water, in fact the
peat should leach humic ACIDS surely? Come to think of it the last substrate
was equally inert, being red builder's sand out of a busted sandbag. However
I didn't wash it before I put it in so I kinda assumed a cat must have
widdled on it or something to make it alkaline. Sadly I don't own an ammonia
t.k. (all my tanks are cycled already). Also, my 20g has the same red
sand/clay soil in it and has never had any problems with high pH. The vase
was very cheap so i thought maybe there is a cut-price kind of glass that
leaches basic compounds (sodium hyroxide? could be) when in contact with
water. Wouldn't be much good for flowers, then, either....
PS Ee-jit is convalescing fine, he ate a whole load of bloodworms today and I
think the big gouramis are scared of him even though he's 1/4 their size...