05-02-2019, 11:09 AM
Join Date: Apr 2005
Location: Brentwood, CA, USA
iTrader Positive Rating: 100%
| | Re: UV sterilizers and Excel
Originally Posted by KimberlyTRzz
I too am searching for a clear cut answer to the question of how UV sterilizers and Seachem Excel interact or if they even do. It seems there are conflicting answers from Seachem reps.
I just became a member today and am happy to be here
Just before reading this conversation in these forums I was here https://www.seachem.com/support/foru...-the-use-of-uv
where a member of the Seachem forums had asked about UV light interactions with Seachem Iron and Seachem Excel.
Here is the copy/paste quote from the Seachem tech in reference to Excel: "Hello,
Flourish Iron is in a form that is readily available to the plants to uptake. It is not in a form that is particularly sensitive to UV light. Flourish Excel can be degraded faster by the use of UV light."
I am very interested in finding a solid answer to this question.
Welcome to APC! I read all of the posts on this subject and I can't see any conflicting Seachem replies. We have known for some time that Excel has only about a 24 hour life in our aquariums, which is why most of us dose it daily. We usually ignore Seachem's 5 ml/10 gallons initial dose recommendation, and dose 2 ml/10 gallons every day, including water change days. I have been doing that, and it worked for me. Of course, even DIY CO2 is much more effective as a carbon source than Excel, but dosing Excel and using DIY CO2 works fine - the Excel helps avoid algae problems, while the CO2 is encouraging faster plant growth.