How much calcium is too much?

at one time i came accrost a video i think it was mr saltwater tank but i tryed this when i was having issues with low ph i ran a 1/4 inch plastic hose outdoors and ran it to my skimmer air inlet ever sence than i have been at 8.4

it sounds like a pita but it works well for me i cant remember the reasoning behind how it works i wish i could find the video

 

Whoa! Careful, sodium bicarbonate (regular baking soda) will raise his KH, which is the last thing he wants to do.

Baking the baking soda at 400* for an hour will change it to sodium carbonate, which can be used to raise ph.

 

The reasoning behind it gt40425 was CO2 - tanks with elevated CO2 levels, tend to have lower PH levels
running the line to the outside, means fresh air rather than room air was being delivered to the tank

winter time, when people are inside more, with windows and doors shut and heaters on in the home, can have elevated CO2 levels and that means higher CO2 levels can give us PH issues in our tanks

Steve

 

Sodium Carbonate will also raise his kH (from "karbonateharte," it is defined as the measure of alkalinity caused by bicarbonate and carbonate). Many of us use it for this purpose as one part of two part. Since his alkalinity is fine, I don't think there is any reason to mess with pH directly. If it gets particularly low, look at outside sources of acid, like high CO2 air or an excess of decaying matter in the tank as others have said.