ph

[britishred]

some 1 told me that u can put some rock in your res to keep the ph steddy u get it from a aquariam shop is this true ??? if so does any1 no what its called???

thanks

 

[fatman7574]

There are rocks there are aragonite (Calcium Carbonate) commonly sold as live rocks for use in saltwater aquariums They have base rock which is the same thing but with out life forms on it. I have not heard of anyone suing them to buffer nutrient solutions. They would tend to keep the water buffered to a pH higher than would be desired with hydroponics. They come from an environment with a pH over 8. The lower the pH drops the more they would dissolve and raise the pH. If you take a calcium carbonate rock and put an acid on its surface it fizzes (effervesces).

 

[smallclosetgrowr]

could be charcole, look it up

 

[smallclosetgrowr]

u can get ph buffers at your aquarium so why would u get the rock?if your ph keeps rising dramatically then find out what the problem is

 

[fatman7574]

u can get ph buffers at your aquarium so why would u get the rock?if your ph keeps rising dramatically then find out what the problem is

He merely asked about aquarium rocks used to steady the pH. He did not say the pH was going up or down. But as there is nothing that is a buffer against pH rise one should likely assume he is wanting to buffer against pH drops.

Charcole? Are you trying to address activated carbon?

Your avatar guy looks like he needs to use the restroom. Cute.

 

[dbo24242]

why don't you go the aquarium and ask em, but double check it before you use it. as fatman so eloquently put it they come from a different environment.

sodium carbonate is pH up so calcium carbonate would likely raise pH. donno what would lower it... phosphoric acid works pretty well

 

[fatman7574]

Typically Pottasium Hydroxide is used to raise the pH. A carbonate such as magnesium carbonate or pottasium carbonate as a buffer. Lowering the pH is usually done with Phosphoric acid or Nitric Acid. Dyna-Grow pH Up contains Pottasium Hydroxide and Pottasium Carbonate. Dyna-Grow pH Down usually contains both Phosphoric acid or Nitric Acid. Cheaper versions usually do not add the buffer (pottasium carbonate) to their pH Up, nor do they add Nitric Acid to their pH down.

 

[britishred]

Typically Pottasium Hydroxide is used to raise the pH. A carbonate such as magnesium carbonate or pottasium carbonate as a buffer. Lowering the pH is usually done with Phosphoric acid or Nitric Acid. Dyna-Grow pH Up contains Pottasium Hydroxide and Pottasium Carbonate. Dyna-Grow pH Down usually contains both Phosphoric acid or Nitric Acid. Cheaper versions usually do not add the buffer (pottasium carbonate) to their pH Up, nor do they add Nitric Acid to their pH down.

thanks for the info f**k this forum is good s**t

 

[smallclosetgrowr]

Typically Pottasium Hydroxide is used to raise the pH. A carbonate such as magnesium carbonate or pottasium carbonate as a buffer. Lowering the pH is usually done with Phosphoric acid or Nitric Acid. Dyna-Grow pH Up contains Pottasium Hydroxide and Pottasium Carbonate. Dyna-Grow pH Down usually contains both Phosphoric acid or Nitric Acid. Cheaper versions usually do not add the buffer (pottasium carbonate) to their pH Up, nor do they add Nitric Acid to their pH down.

Baking soda will stop your ph rising, it will shoot the ph up but when u get it back down again it works awesome , 1 table spoon per gallon. i was trying to go for the micheal stance in my avatar o well