Flourish Excel got rid of all my algae - Page 9 - Algae

**John P.** · 07-01-2006, 11:39 AM

Bump the phosphate up to about 3. You can leave the nitrate where it is.

It might take 2 weeks, but your GSA should go away.

mixpix · 07-01-2006, 11:45 AM

Thanks!!

detlef · 07-02-2006, 11:53 AM

Anyone ever worried about Excel destroying the filter bacteria due to it's disinfecting properties? At least if an overdose is used for killing algae.

May be this one should go to Seachem as well?

Regards,
Detlef

5380 · 07-06-2006, 09:16 PM

Just another fishless cycle, if you have a thicket of plants this wouldn't be anything to worry about.

detlef · 07-07-2006, 03:42 AM

According to Seachem (they talk about reducing properties of Excel) I concluded that those with low tank oxygen levels should be careful and airate their tanks if they dose Excel.

Regards,
Detlef

Zapins · 07-07-2006, 01:35 PM

Has anyone else noticed that BBA starts to come back when excel dosing has been discontinued for several months after successfully irradiating all BBA?

Seems like a few tufts of it are coming back now on the wood even though CO2 conditions have been the same for the past few months.

banderbe · 07-09-2006, 04:11 PM

Quote:

Originally Posted by Zapins

Has anyone else noticed that BBA starts to come back when excel dosing has been discontinued for several months after successfully irradiating all BBA?

Seems like a few tufts of it are coming back now on the wood even though CO2 conditions have been the same for the past few months.

Nope. I haven't dosed excel for a few months and BBA hasn't come back, nor has any algae other than green dust that accumulates by week's end.

quatermass · 09-27-2006, 02:10 AM

So the level of glutaraldehyde in Excel must be less than 0.9mg/l? I'm guessing of course but as Seachem don't say it stops algae I assume its less than this.

Seems awfully low for such a strong smelling liquid.
but what do I know?

Do we know how long a 3x dosage of Excel takes to kill Algae?

I'm amazed at the low price of Excel in the USA.
A 2L bottle in the UK costs the earth - £42 ($79 US)! whilst in the USA it costs $23.99 or £12!

So I'm keen to find out if I can get it cheaper or is there a substitute chemical?

quatermass · 09-27-2006, 03:25 AM

I've discovered a supposingly safer alternative to glutaraldehyde - Succinic dialdehyde (succinaldehyde or SDA). See picture.

ref: Toxic Substances Bulletin May 2003 Issue 51

Trade names of glutaraldehyde - Wavicide-01, Cydex.

quatermass · 10-01-2006, 12:32 PM

Just a thought....

If Excel is suppose to be a kind of 'liquid co2' where does the Carbon come from?

The above image clearly doesn't have any Carbon in it.

And polycycloglutaracetal doesn't seem to have C either.