Link Between Gh And Algae Growth?

mark4785

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Hello,

I am currently treating/killing a phytoplankton named blanket weed that has formed in my pond. The treatment I am using is named 'Aligizin P' by Waterlife. Ever since using this product I have noticed that the general hardiness (GH) of the water has fallen to 7dH. This is below the recommended level of 8 - 15 dH.

I cannot prove that the product is lowering the GH level so I would appreciate it if I could get some feedback regarding the chemical changes that generally take place when an algicide is used.

The GH level went below 5dH during May 2010, not surprisingly after about 1 month of blanket weed treatment using the same product. I am very concerned about this as I know that 8 - 15 dH of GH is recommended in order to ensure the efficiency of the nitrogen cycle.

I think my main question that I'd like to be addressed is: Is this particular product causing more harm than good?

Note: My KH (10+ dH), PH (8.2), ammonia (0), nitrite (0) and nitrate levels (0) are within normal range.

Thanks,

Mark.
 

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