Hmm... more information than http://www.algaebase.org ...?rrog
My bad - I failed to consider that there are companies re-packing the Acadian Seaplants' material under their labels - that's how the fertilizer industry works. That's kelp meal under Epsoma's label.
Down-To-Earth also has a box with their label and I believe Dr. Earth and I'm sure others that distribute in specific geographical areas. For example, Epsoma is a fairly new arrival to the PNW but I'd seen the name pop up for several years. The brand name on a bag of any fertilizer sold at the retail level is meaningless - they all source from 2 major brokers and almost no one packs their own. It's all out-sourced to a handful of companies which has been the industry standard going back to the 1920's, i.e. it's not a new business model.
As long as the label reads "Kelp Meal" then you have the correct product. The other identifier is Ascophyllum nodosum which is the Botanical name for the species of kelp harvested and processed by Maxicrop & Acadian Seaplants.
Maxicrop packs straight kelp meal and is available but it comes at a higher price over Acadian Seaplants due to transportation charges getting it to the East Coast from Norway. Both companies harvest the same species from the North Atlantic - Maxicrop built their plant in Norway 62 years ago and Acadian Seaplants began operations in 1981.
The Seaweed Site - the most comprehensive web site I could find on marine algae: species, comparing differences between brown, green and red seaweeds, etc.
Thanks Coot. I wonder, then, about the Epsom Salt (Magnesium Sulfate), as it's immediately available also.
My fear assumes that the Ca+ and Mg+ in my water is available for the plant / microbes and not locked in some very stable (less available) form.
SeaMaiden, You would suggest having the water tested or test it myself, to determine the type of Ca+ and Mg+ I have? If they are carbonates, does your instinct tell you they are locked up as potential Cations and I wouldn't have to be as concerned?
If I were to hazard a guess it would be from the heat created in a large compost pile. A person can actually preheat the water coming into the hot water tank as well as create a methane vapor for a fuel source all with composting.I'm not sure where the term cook came from either honestly - compost is the correct term for certain...
dank.Frank
I really want to know how well-fed fertilizer company bosses are - how much of price is profit margins and how much of it can we just toss up to business expenses?
As for whether they're locked up, that would be my practical experience, yes. Whether it's trying to get Ca into photosynthetic hermatypics or into my tomatoes, if it's only form is CaCO3, nobody gets enough and it needs supplementation.
rrog
I'm supposed to ask you if the water softener chemical you're using is Potassium Chloride
Let me know......
BTW - are you growing coral or maintaining a reef system in your home?
but arnt humic substances capable of taking out some of the cal and mag ions that would make water "hard"?Most carbonates (including Calcium Carbonate) are not water soluble - basic chemistry and the Laws of Solubility.....
Just trying to bring this back around to science and such
Humic substances and clay will hold Calcium++ ions where they can be exchanged with other cations for uptake by the roots.but arnt humic substances capable of taking out some of the cal and mag ions that would make water "hard"?
peat has a softening effect in water?