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comparisons of fresh water algae and kelp
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Posted by joemota z5ONT (My Page) on Mon, Jun 22, 09 at 8:30
| Is their a difference from a nutrional point for a plant, between fresh water algae and salt water algae (kelp)for . You can harvest fresh algae from ponds for free as compared to having to buy kelp for about $60 per 20kg bag |
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RE: comparisons of fresh water algae and kelp
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| Instead of fretting over the price of kelp and nutritional difference between the two types of algae, why not be content with a fine mixture of inorganic salts? A good water-soluble fertiliser such as RapidGro or Peters will consistantly provide all of the elements necessary for healthy plant growth, and it's certainly much less expensive!!! |
RE: comparisons of fresh water algae and kelp
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| No, salt water is full of minerals so saltwater photosynthesizers can get what ever there little enzymes desire, freshwater algae have evolved to make due without. |
RE: comparisons of fresh water algae and kelp
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| Freshwater algae should be fine for mulching and fertilising. But you'll have to do an awful lot of collecting to get 20kg dry weight of it - probably far more than $60's worth of time and labour. Inorganic salts are fine for providing nutrients, but they don't do anything for soil quality the way organic mulch does. Resin |
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