What is in Kent Marine Tech M that kills Bryopsis

DavidG1966

Premium Member
According to the Marine Depot website this is what it contains:

Deionized water containing the following elements (as ions): magnesium, chlorine, sulfur, calcium, potassium, bromine, strontium, boron, fluorine, lithium, rubidium, iodine, iron, molybdenum, zinc, nickel, copper, manganese, vanadium, cesium, cobalt, tungsten, selenium, and chromium.

What in there is killing the Bryopsis?
 
Magnesium of course. Even the brs Magnesium works. I don't know why people think it's just the Kent brand that works. 1800ppm of magnesium... bye bye bryopsis.
 
not sure what it different about techM but it cleared up the bryopsis in two of my tanks - it's not the total Mg level its the concentration of TechM relative to your total Mg count. Seems like if ~30% of your total Mg count is TechM it does the trick
 
BRS MgCl and/or MgS04 did not work

Tech M or Brightwell Magnesion P works

For small areas I just cover it with flexible pvc matting (used under shower installs, sold at HD) for a couple weeks, does the trick
 
Yeah, only Kent Marine Tech-M worked for me, as for what it was chemically? only David Blaine or Randy Holmes Farley may know.
 
BRS magnesium is pharmaceutical grade. I doubt that Kent or Brightwell are, so I think it's fair to assume some minor contaminant in the latter is what affects the Bryopsis.
 
Tech M worked really well for us. 6 months of hair algae was gone in a month.
Be sure to find the source of your algae problem and eliminate it first then Tech M to eradicate.

Some of our corals did lose color at the heightened Mg levels but came back in a week after discontinuing use of the Tech M

We only used the Tech M and no other product so I can't speak as to weather the other products work or not.

BTW if you look at our thread history there is a thread about our hair algae issues and how we solved it.

The key is to raise your Mg levels to 1800+ and keep them there until the algae is gone. And again make sure you eliminate the source of your algae feeding Phosphates.
 
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I think I have some bryopsis that is spreading and I'm going to try the mag I already have on hand and see if it works (Seachem). Can anyone recommend a test kit that goes up to 1800ppm? Or just cut sample with half RODI water and double the results? Does everyone agree on the 1800 ppm target? Thanks.
 
With most magnesium test kits it will be simple addition for more drops needed in the titration. I've always used salifert for magnesium.
 
ron it cannot be the di water how much ash is in there
if its in a bottle it dont work for me tryed it poured the rest down the drain
 
Just started using the Kent Tech M for my Bryopsis outbreak - 3 days ago I started and already it is almost all gone. The leaves started to turn clear and dissolve away. Amazing product.
 
For what it's worth, Tech M did nothing for me. I had a bad outbreak, tried everything I could read about, including physically scrubbing all rocks and going competely dark for 14 days. Eventually I just said the hell with it and left it alone. After a few months it died of it's own accord. For the record, my nitrates and phos were well under control.
What may have contributed was a number of changes including swapping out some of my rock, adding bio pellets and reducing the proportion of whiter light.
 
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