Adding rock

grantfoster02 · Nov 29, 2021

Can I add dry base rock to my established(ish) tank? Or would it cause something major? I’m close to ending my GHA battle (hopefully).

vetteguy53081 · Nov 29, 2021

grantfoster02 said:
Can I add dry base rock to my established(ish) tank? Or would it cause something major? I’m close to ending my GHA battle (hopefully).

You may get diatoms, but do add 1.5ml of liquid bacteria daily per 10 gallons for up to 2 weeks to help seed it

shakacuz · Nov 29, 2021

vetteguy53081 said:
You may get diatoms, but do add 1.5ml of liquid bacteria daily per 10 gallons for up to 2 weeks to help seed it

+1 to this. MB7 or Dr. Tim's will work

ScottB · Nov 29, 2021

If it is mined rock like Marco, it will have no phosphates. If you add a lot of it, and you don't have a lot of phosphate to spare, what is left will bind to the rock. Corals and all surface competitors (film algae, bacterial film, coralline, etc) will be compromised, potentially leading to dinos. Test your phosphate levels with a Hanna ULR checker.

grantfoster02 · Nov 29, 2021

ScottB said:
If it is mined rock like Marco, it will have no phosphates. If you add a lot of it, and you don't have a lot of phosphate to spare, what is left will bind to the rock. Corals and all surface competitors (film algae, bacterial film, coralline, etc) will be compromised, potentially leading to dinos. Test your phosphate levels with a Hanna ULR checker.

Phosphates are a .65