Aquarium Chemistry Question? Ask the Doctor!

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Randy Holmes-Farley

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Randy Holmes-Farley

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I have a question. Why does my ph rise to 8.47 during lights on and then It drops to 7.98 at night until my lights go back on. I'm using xr15pro with ramp up and ramp down. My peak is from 2pm to 5pm.


That is normal. Photosynthesis consumes CO2 during the day, raising pH.
Respiration is constantly adding CO2, and at night it predominates, reducing pH.
 

JadeM

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how do you raise your ph using bicarb soda? thanks
 

Randy Holmes-Farley

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RadagastWizard

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Hello Mr. Farley I have a question regarding going to college for biology, more specifically fisheries or biotechnology and I'm wondering what the outlook is and if you have any advice.

Also, can you get a job outside of the area you went to college?

Thanks,
Luke
 

Randy Holmes-Farley

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Hello Mr. Farley I have a question regarding going to college for biology, more specifically fisheries or biotechnology and I'm wondering what the outlook is and if you have any advice.

Also, can you get a job outside of the area you went to college?

Thanks,
Luke

Sorry, I'm not really familiar with the job prospects in that area. Most of my professional experience is in pharmaceutical discovery.
 

Baker91

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Hi randy. I'm needing help with some mag. I have mag crystals but I don't understand your diy. And the brs calculator isn't helpful either. can I use just magnesium chloride or do I need something else?
 

Baker91

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Sorry I took so long to reply I'm dosing calcium and need to dose mag. I made your two part do I need to use the bra calculator to figure out my dose? I also got my daily dosing chart form one of your articles. Just need help with the first dose to raise it up to my target level
 

mps026

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Hi randy, for the longest time my tank needed the same amount of calcium and alk. I recently changed my light and it seems everything has been thrown off with me having to cut back dramatically on dosing both. Is this normal as the corals adjust to a new light?
 

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My dumb question:

If I am running an air pump/air stone in a room with high C02 levels, is the air stone simply pumping the C02 laden air into the tank? Or does the air pump/stone still somehow displace C02 within the tank?

My assumption is that it is putting C02 laden air into the water since the air pump has no method of scrubbing the C02, but hoping someone more knowledgeable than me can confirm.

Thanks!
 
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