Can Phosban reduce pH over time?

[gold]

I just got some phosban and I was reading the back and it says that it is ferric oxide hydroxide and if im not mistaken I learned in chemistry that hydroxiedes are always part of "basic" substances as opposed to acidic substances so I guess what im asking is will this "basic" substance lower my pH over time due to it's hydroxide content?

[Randy Holmes-Farley]

Hydroxides that dissolve will raise pH. Like calcium hydroxide used to make limewater. Ferric hydroxide, however, does not dissolve enough to have a significant impact on pH in marine systems in that way.