I know you can substitute metricide for excel because they are both glute., but what is the recommended dosage in ml per 5 gallon for metricide without diluting it? Thanks!
I bought the 28 by mistake. What is the dose for that one.
I was using the Excel in a 10g tank @ 2 ml per day.
I only have one 10g tank that I was using this in so I really didn't want a gallon.
I saw the Quart and clicked on purchase before I noticed it being the 28.
Contains no surfactants
Hi Roy... I have seen a number of your posts that state that Metricide 14 should be diluted to become an Excel equivalent since Metricide 14 contains 2.6% glutaraldehyde ans Seachem Excel contains 1.5% glutaraldehyde. Upon closer inpection of the label on my Seachem Excel bottle, its states that it contains 2.5% of Polycycloglutaracetal. I assume Polycycloglutaracetal is just their trademark name for glutaraldehyde but the concentration is puzzling me because if Polycycloglutaracetal is a 1:1 equivalent for glutaraldehyde, then this would suggest no dilution is needed. I contacted Seachem to see if they have changed their formulation or increased the concentration and they say no. It is still the original formula. So should we still dilute Metricide as though Excel should be at 1.6% glutaraldehyde?
The original testing of the glutaraldehyde concentration was done Apr 12, 2006 (see 9:09 pm post) so it is possible that Seachem has changed the concentration level over the years. If you could take a picture of the label showing the information about "2.5% Polycycloglutaracetal" and post it in this thread it would be helpful.* Proprietary aqueous solution of salts. The identity and weight of proprietary, non-hazardous,
main ingredients are withheld as a trade secret. Other ingredients are present in amounts less
than 1% and are non-hazardous.
Kind of a mess if you ask me:Here's an extract from the MSDS of Flourish Excel from Seachem.
/ParaGuard, HealthGuard , Pond HealthGuard, *Flourish Excel*,
StressGuard [NFPA 1,0,1]:
*Principal ingredient is glutaraldehyde *with ameliorating
ingredients, pH 7. ParaGuard also contains malachite green.
Malachite green is a
possible carcinogen. Ingestion may cause severe gastric disturbance.
May cause moderate irritation of mouth. If ingested, drink large
quantities of milk or water. Universal antidote (charcoal) is
useful. If enough is swallowed to cause distress, seek medical
contact will cause severe irritation. Flush eyes copiously with
water. Seek medical attention./
https://www.aquaticplantcentral.com...134002-has-seachem-excel-changed-formula.htmlI did my research and found that the formula for Excel appears to have changed. Old posts said that Excel was 1.5% Glutaraldehyde. New Excel label says that its 2.5% Polycycloglutaracetal , but the dosing instructions remain unchanged:
http://blog.naver.com/PostView.nhn?blogId=sueay&logNo=220379143748&redirect=Dlog&widgetTypeCall=true2% acetal form of 1,5 pentandial