Questions on Dosing Micros....... - The Planted Tank Forum
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post #1 of 5 (permalink) Old 10-13-2004, 06:34 PM Thread Starter
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Questions on Dosing Micros.......

I've got a 20 gal. High lit Planted Tank... With DIY CO2..
First off,
I have no heater in this tank and temp. fluctuates between 70-76
degrees approx.. Is this ok or do I really need to get a heater ....
( was worried about the varience in temp. on plants- growth, etc.)

The Dosing of Micros- I currently dose Plantex CSM/Boron &
Flourish Iron ( alternate ) .

Plantex- 591 ml. Bottle @ 2 Tbls. Mixed. I apply 3x per wk @ 2mls..
Seachem Iron - 1ml. - 3 x per wk..
Sundays I do a 50% water change ( always). then redose ( N, P, K) and Micros....

My questions- Am I dosing too much of this ( Micros) ????
THe tank has been up and running for around 7 months at least now and I
have never had any major algae outbreaks of any kind..
What I'm starting to see though is My E. Stellata is More Green In color and
branching out at the top ( someone mentioned about an imbalance of ferts)
My Rotala Macrandra is kind of a orange red. and I've heard this is a good
indicator of ( can't remember on this..)
Plants don't look quite as good as they should ( I'm trying to learn more on visual) A couple of days after water change I see algae forming on the glass
and clean off accordingly.. Water should be more clear in general I think..
I also think that accumilation of algae on the glass is not necessarily a bad
thing but Seems rather fast in doing so. (spot type algae)...
PH-6.8 on the average
KH and GH around 4-5
PO4 @ 1.0 at least sometimes higher
KNo3- @ 5-7 on the average

Would really like to get some opinions on this
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post #2 of 5 (permalink) Old 10-13-2004, 06:58 PM
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Temperture does affect plant growth immensely, possibly even more then CO2 and lighting as I've read in books. Usually it isn't an issue since most everyone heats their tanks and that's why it isn't discussed. Better to get a heater.
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post #3 of 5 (permalink) Old 10-16-2004, 04:30 PM
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I don't use heaters, many plant do fine at lower temps than our usual tank settings. If you find that the temps in your house are going to be too cold for the fish you keep then get a heater, otherwise you should be fine.

I think the typical responce to your nutrient levels would be to either raise your nitrates a bit, so that you start with a 10 to 1 ratio with P, or lower your P. Your micro regime looks fine, the stellata seems to color up best in a nitrate starved situation but with the high P you are encouraging the green spot algae. The high level of P also tends to contribute to low water column Fe which is bad if you want plants to turn red.

Of course I'd like to know what you mean by high light, a wattage total would help.


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post #4 of 5 (permalink) Old 10-17-2004, 06:38 AM
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I dose Plantex about that much also. Try reducing the dosage to 1.5ml and see if the green spot algae decreases. They always appear (more than usual) when I slightly overdose Plantex or Flourish.

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post #5 of 5 (permalink) Old 01-06-2005, 01:44 PM
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First off can you be more specific on "High lit tank" ?
Then I would setup a more diciplined dosing regimen, like...
based on a 20g
day1) clean glass, prune, preen, clean filter 50% water change dose macro's at least 10:1 maybe a bit more, depends on light/C02 ratio. The higher the light, the more C02, macro's and micro's required.
day2) dose micros 3 to 4ml based on your mix (which is about right)
day3) add macro's again 10:1
day4) same as day2
day5)same as day3 3x a week should be sufficient
adding iron on micro days at different time slots.
day6) same as day2
day7) water change/reset tank, start over
amounts of 7 day dosing may be increased or decreased but not on frequency of dosing.

your ph/kh reads around 19ppm C02, depending on the "high light" you refer to C02 content may need to be increased, 30 ppm being ideal,(or decrease light some..looking for balance) how do you desolve C02? is it efficent? how often do you change your mix? all this plays a role....

Temp wise water in the 70's is sufficent, you dont want it dropping into 60's or climbing to 80's, then you would need a heater to help keep it more stable.


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Last edited by WfxXx; 01-07-2005 at 01:21 AM.
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