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Well, damn I said no more post but you have so many misleading errors I have to :) I have talked to Ron and members of the staff numerous times and have been working on a project with them for one of the public aquariums for a few months. I also buy quite a bit of carbon from them Really, well...

Well Tom, I may have to disagree :D It may be better off if you have it than a LFS :-X

I totally disagree with you on pore size. The smaller the pore the better. This should be so obvious it's almost silly That statement proves my point you really do not unbderstand GAC. The tighter the pore size the faster the GAC surface area plugs up, which does not allowing much into the pore...

I TOTALLY disagree. The test isn't supposed to be "real world". It's supposed to be isolated and without outside interference Well, it most certainly should be and may will TOTALLY diagree with you. Lab test can give different results than the real world and has been proven many times. And...

That is true, but that study has also gotten a lot of critism too so I'm not sure I'd rely much on it. Hovanec's study can also be criticized and has been by Harker. He never gave the manufacture and type of the GAC used. You CAN NOT be compairing GAC unless they are on a equal bases. You do...

oop's

What you have there Tom is a very dangerous anemone :) It is one of the Actinodendron, aka Fire Anemone, Hell's Fire Amenone, Tree Anemone, Branching Anemone and are very difficult to raise. Here are some links and pics...

Phyl The rather crude guide Carlo gave you is the same kind I would give you. It is often very difficult to tell which is which without lots of experience looking at GAC and hopefully under a hand lens. GAC is like a Hobby of mine ;) Hardness is a good guide to see for example if it is...

Carlo and others If you want to remove tannic acids then I'd agree lignite is best and you can see this in Harper's article (link above) but if you want to remove DOCs then bituminous has been shown to be superior. Both types of carbon will still remove tannic acids and DOCs but they each excel...

Carlo As I allude to the type of GAC is a choice. The same can be said for its application. Some use and some do not. Some use 24/7 and others do not and some use not passively while others due it actively and the same can be said for the amount to be used. I might add there has been recently...

All GAC leaches PO4 to some degree you can not get away from. It is part of the raw material. The impact on the tank is meaningless, some leach more some leach less. It depends on "who's GAC you are using. And some "show" no PO4 leaching. I have have run test on about 50 different kinds of GAC...

I have never seen one from Boyd and have never bought the claim by SeaChem and they do not claim over 500 but over 600 !! And I believe long ago they made a mistake, may be converting the Molasses decolorizing efficiency value. Try to find a Bituum anywhere with a M # that high. They actually...

Carlo The best carbons are usually produced from bituminous coal and have a high porosity and low density. Look for a high total surface area combined with a high pore volume or high molasses number (500-700), indicating a porosity suitable for water filtration. It should also have low ash...

Phyl Ok, I soaked carbon in my source water for a few minutes and then used that water to test for PO4. The result was a PO4 reading of .03. I'll leave it sit overnight and test again tomorrow. This test has been done many time over the ye rs and there are even articles out on such tests. I...

Made a error here 1.0235 ( 31 ppt ) and not 1.0205 (27.5 ppt ). JohnS Here is the link to the thread I got the info from in case you want to read more on the subject. I just noticed that this "thread" is actually Randy's article. I did not check it before so you did good :)

Let me clarify a couple of things. First, that % on the right side of a refract is not 35 % or 37 % it is 3.5 % and 3.7 %. Seawater is a 3.5 % solution = 35 ppt, also written 35 o/oo, or 35,000 ppm. Some have the % replaced with ppt. Second, many of these cheap Chinese refracts have been shown...

The sponges is one of the Clathrina and are fine to keep, they are just filter feeders. These are not the ones we call Pineapple or Q-Tip sponges The fish in question is a Picasso Trigger, no doubt about that. Look at the yellow on the eye, the others do not have that. And those Ricordea in...

Jazz The pics are kinda' blurry but the white stuff with tentacles are indeed sponges. They really are not tentacles but Osculum "hairs" called Osculum Spicules, found at the top of the Osculum in many sponges The other pic L@@KS like bubble algae but need a better pic...

K= Kelvin ;), not K as in Potassium but many believe Potassium plays a roll. The K Carlo is from Eric Bornenman. He once said on his forum on RC something like " give me a tank and I will change the bulbs to a higher K and they will be brigher and more coloreful". The low nutrients is Zeovit...

I could not find that damn calculator but here is a another way to make a ??? mV ORP using Bleach and Caustic Soda, NaOH, although I don't like people playing with this stuff. http://www.powellfab.com/products/orp/Chlorine_Scrubber_ORP.asp...