Does using coir change ph?

Sourpuss

Member
Nov 20, 2017
37
6
8
Minnesota
I am contemplating using coir mats under pool filter sand. I have a ranchu that will be in this tank. My ph is 7.5. I really don't want it to go any lower. Anyone notice any changes in ph when using coir? Thanks.
 

Sourpuss

Member
Nov 20, 2017
37
6
8
Minnesota
I ideally would like to make some sort of rhyzosphere. I can either put it in entire aquarium of i can use it just under my planting area. Plants will be aponogetons,crypts,anubias,java fern vars,tiger lotus possibly smaller swords etc. The sand i am using is red flint brand pfs.
 

Fishfur

Subscriber
Oct 16, 2016
13
3
3
Mississauga, On. Canada
Coir isn't terribly acidic. Not as acid as peat, for example. Coir is generally between pH 6 - 6.7. Like wood, as it continues to leach, its acidity will be reduced. Given time, it would neutralize but how much time that would take, can't say. It does leach very dark brown colour like nothing else so you'd have a lot of staining of the water.