Sunshine #4 - soil or soilless?

Ingvar

Member
Is this medium (the black bale, not yellow bale) considered soil or soilless? It naturally keeps more acidic (per the manufacturer) and I have no idea if I should be using higher or lower ph when watering it. Thanks!
 

Aby55

Well-Known Member
Looks like its soilless like the pro-mix I use.
It has similar ingredients.
Sunshine Aggregate Mix #4 uses a combination of Canadian Sphagnum peat, perlite, dolomitic limestone, gypsum, and a wetting agent to provide plants with a growing environment with plentiful oxygen and quick drainage.
 

Ingvar

Member
Looks like its soilless like the pro-mix I use.
It has similar ingredients.
Sunshine Aggregate Mix #4 uses a combination of Canadian Sphagnum peat, perlite, dolomitic limestone, gypsum, and a wetting agent to provide plants with a growing environment with plentiful oxygen and quick drainage.
Does this mean I should keep the soil and nute mix at 5.8 ph rather than 6.3?
 

Six9

Well-Known Member
Does this mean I should keep the soil and nute mix at 5.8 ph rather than 6.3?
Is yours Sunshine Advanced? or the regular #4? advanced has coco in it. Either way I found 6.2 to do better than the 5.8 as suggested for soilless. Higher pH helped prevent magnesium deficiencies, esp with indoor winter grows where soil temp can stay cool

oh and yes it's considered soilless. But... 6.0-6.2 recommended from this fan
 
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