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Re: Profile

Wayne wrote:


I take back what I said about Profile not changing the pH in my tank.
Everything was fine for about ten days with just a filter running.
Yesterday I finally got around to adding CO2 and planting the plants. At
first I thought I was getting too much CO2 but then the next day I
checked the pH and it had dropped from 7.4 to below 6.0 after the
addition of CO2 and plants. I took a sample of water and aereated it and
the pH would not come back up. So the pH drop is unrelated to carbonic
acid concentrations in the water. I wonder what sort of acid the Profile
could be producing? It is not the peat because the KH has dropped from
four to zero. It looks like a strong acid is at work here. I think
disturbing the Profile during planting released enough acid into the
water column to consume all the carbonate in the tank.


Rather than do the many water changes that are probably necessary to fix
this problem, I put in a number of seashells. Does anyone know if
seashells contain magnesium as well as calcium. I am assuming yes as
limestone deposits also contain magnesium. Maybe animals like snails,
clams and oysters can select for certain minerals though.