04-04-2018, 10:41 AM
Join Date: Apr 2005
Location: Brentwood, CA, USA
iTrader Positive Rating: 100%
| | Re: Holes in older leaves. EI Dosing
Originally Posted by Arkaeus
The beard algae was from the previous tank before I started dosing EI method. The drop checker I have is a Fluval one and I use the Fluval drop checker fluid. It stays light green. According to Zorfoxs PTC with a PH of 6.86 and a KH of 3 will be around 12.46ppm. I understand this is way too low, I will adjust my drop checker when I go home for lunch. I thought I had quite a bit of CO2, I guess I was wrong... I have not seen the beard algae spread as of yet.
So your saying if I had enough co2, say around 30ppm, the beard algae should be dead by now?
Raising the amount of CO2 isn't likely to cause the BBA to die (in my experience). But, if you don't already have a lot of BBA in the tank, having more CO2 can cause the plants to be healthier, and that inhibits BBA.
I have had problems trying to use the solutions that come with a drop checker, so I always make my own, using distilled water and baking soda. It is pretty easy to do. I think it is likely that most of the companies selling drop checkers don't understand how they work, so their 4 dKH solutions can be completely wrong. (Again, based on my experience.)
A way to check your CO2 concentration is: First, take a cupful of water from the tank. Let it sit in the open air for 24 hours or so. Measure the pH of that water. Now measure the pH of the tank water when the CO2 has been on for several hours. The drop in pH from what it was for the cup of water will tell you about how much CO2 is in the tank water. The ppm of CO2 is 3 time 10 raised to the difference in pH power. So, if the cup of water had a pH of 7.2, and the tank water had a pH of 6.4, the difference is .8, so the ppm of CO2 is about 3 x 10 to the .8 power, or 3 times 6.3 or 19 ppm.