Aquatic Plant Forum banner
1 - 5 of 5 Posts

·
Premium Member
Joined
·
7,436 Posts
Discussion Starter · #1 ·
Ms Walstad mentions in her book that available iron in the tank water can be a cause of algae growths. Algae has no access to any iron that is in the substrate, and they need iron to grow. I think I can test that idea using my 10 gallon tank, with a barrier in the middle, making it two 5 gallon, independent, tanks, each with the same light, the same substrate, and nearly identical plants. To do this I will start dosing Flourish Iron in only one of the two tanks. I would expect to see noticeable algae start growing in the tank with the iron. Today I dosed one tank with the 0.5 ml dosage per the Seachem recommendation. Both tanks get NPK and trace elements, including iron, every other day.

The iron is dosed in the left hand tank.
 

Attachments

·
Premium Member
Joined
·
7,436 Posts
Discussion Starter · #3 ·
My pair of tanks has been in use for 6 months now, and algae has not yet been a problem During that time both tanks have been getting trace element mix, which has iron in it, routinely. If there is a problem it will be when there is more iron in the water than the plants can use. Today I changed to 1 ml of Flourish Iron, so there is a bigger surplus of iron.
 

·
Premium Member
Joined
·
7,436 Posts
Discussion Starter · #4 ·
Two weeks later, after increasing the iron dose from recommended dose, to twice that dose, to 4 times that dose, and still no algae problem in that, or the other tank. In fact I see no difference. Iron in the water may be a contributor to algae problems, but by itself it doesn't seem to be a problem. Of course I think we all knew that algae can't be stopped, or stopped, with a "magic bullet", no matter what you try.
 

·
Premium Member
Joined
·
7,436 Posts
Discussion Starter · #6 ·
I haven't checked the water parameters for awhile, but I found that STS lowered the pH considerably when I first started the tanks. I doubt that they have a high pH. Maybe I will remember to measure the pH tomorrow.
 
1 - 5 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top