Originally Posted by Gomer
Anyone care to offer additional info/comments?
I'll just throw in some info I came across. It was translated for me and I'm going by memory as it was told, so take it for what it's worth.
According to this site
Brighty K is created from potassium carbonate that is naturally extracted from trees.
A little pH rise is normal using this product, perfectly understandable since it has carbonates, and pH will eventually return to normal due to the plants. Standard dosage is 1mL per every 20L, or to neutralize chlorine 5ml per every 10L. My friend was a bit confused here b/c it says the normal dosage also neutralizes chlorine. There was no mention of chloramine. Also mentioned was the adverse affect on [Yamato?] shrimp if dosed high; limit dosage at 2x-3x the standard amount and monitor shrimp. (end translation)
The chlorine neutralization is likely due to the carbonate. Chlorine in water is hypochlorous acid, carbonate is a base, and acids and bases neutralize each other. I asked a chemist for a second opinion, and even though he hasn't seen this reaction in literature, chemically it makes sense. Anyhow the chlorine neutralization is just a cool side function of this fert.
If you're worried about chloramines Gomer, redundancy with a dechlorinator will give you peace of mind.
Two things intrigued me about the above info. The amount of carbonate added can be deduced by a KH kit or pH change...thus possible to find exactly how much K a dosage of Brighty K adds.
Folks from Singapore with softwater using Aquasoil have their pH's lowerd around 5 without
CO2, yet Amano in Japan also with very softwater maintains pH's no lower then 6.6 with
CO2. Its must be this small daily amount of carbonates from Brighty K that keeps his water well buffered, balancing the effects of Aquasoil. So, Brighty K...useful beyond a potassium fert? Perhaps so...