Hero420
Member
Hello everyone 
I would like to know if it is advisable to add dolomite lime to a soilless mix with a coco coir base.
I currently have a base mix I put together that is nice and simple but I have not added any rock powder minerals to it yet. It's basically a play on Coots Mix:
1 part Coco Coir
1 part Perlite
1 part Earthworm Castings
I have the following amendments on hand that I'll add to the mix to make it a water only organic grow. These proportions are from LC's Recipe #1:
1 tablespoon Blood meal per gallon or 1/2 cup per cubic foot of soil mix
2 tablespoons Bone meal per gallon or 1 cup per cubic foot of soil mix
1-tablespoon kelp meal per gallon or 1/2 cup per cubic foot of soil mix
For a peat based mix I typically add dolomite lime at 2 Tbsp per gallon or about 1 cup per cubic ft.These days coco coir is easier for me to obtain so I'd like to make this work. I'm aware that dolomite lime has a pH near or at 7 and acts to neutralize acidic soils which helps with peat based mixes since peat is acidic. I'm just wondering what effect if any dolomite would have on a coco coir based mix. If I cannot use dolomite would other mineral sources be advisable such as oyster shell flour, or gypsum? I want to keep this as an organic grow and would really like to avoid any use of a calmag bottled product.
I would like to know if it is advisable to add dolomite lime to a soilless mix with a coco coir base.I currently have a base mix I put together that is nice and simple but I have not added any rock powder minerals to it yet. It's basically a play on Coots Mix:
1 part Coco Coir
1 part Perlite
1 part Earthworm Castings
I have the following amendments on hand that I'll add to the mix to make it a water only organic grow. These proportions are from LC's Recipe #1:
1 tablespoon Blood meal per gallon or 1/2 cup per cubic foot of soil mix
2 tablespoons Bone meal per gallon or 1 cup per cubic foot of soil mix
1-tablespoon kelp meal per gallon or 1/2 cup per cubic foot of soil mix
For a peat based mix I typically add dolomite lime at 2 Tbsp per gallon or about 1 cup per cubic ft.These days coco coir is easier for me to obtain so I'd like to make this work. I'm aware that dolomite lime has a pH near or at 7 and acts to neutralize acidic soils which helps with peat based mixes since peat is acidic. I'm just wondering what effect if any dolomite would have on a coco coir based mix. If I cannot use dolomite would other mineral sources be advisable such as oyster shell flour, or gypsum? I want to keep this as an organic grow and would really like to avoid any use of a calmag bottled product.
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