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-   -   adding PO4 and KNO3 to eliminate algae? (https://www.gardenbanter.co.uk/freshwater-aquaria-plants/2752-re-adding-po4-kno3-eliminate-algae.html)

[email protected] 10-02-2003 08:32 PM

adding PO4 and KNO3 to eliminate algae?
 
Dave.
www.okcomputerworks.com/aquarium.html


AFAIK with fish in the tank your iron doesn't want to be much above 1ppm -
any more than that doesn't do them a lot of good!


Ditto.

You will need to make sure there's enough NO3, PO4, K, GH(3 or
higher).
You can back off the traces, for a 20 gallon tank, the max amount
needed at high light etc is about 5 mls of Flourish/TMG etc every 3
days.
More and you are wasting the stuff.
By doing 50% weekly watrer changes you can re set the tank each week
and ensure a relatively constant level of PO4/NO4/K etc by dosing the
following per 20 gallon tank:

1/4 teaspoon K2SO4 once a week after water change
" " " KNO3 2-3x a week
2-4 rice grain's worth of KH2PO4 2-3x a week
5 mls of TMG/Flourish 2-3x a week.

Do 50% water change which removes any dosing errors you made with the
other mid week dosings. Repeat.

Becomes old hat fast.

Regards,
Tom Barr

[email protected] 10-02-2003 08:32 PM

adding PO4 and KNO3 to eliminate algae?
 
Dave.
www.okcomputerworks.com/aquarium.html


AFAIK with fish in the tank your iron doesn't want to be much above 1ppm -
any more than that doesn't do them a lot of good!


Ditto.

You will need to make sure there's enough NO3, PO4, K, GH(3 or
higher).
You can back off the traces, for a 20 gallon tank, the max amount
needed at high light etc is about 5 mls of Flourish/TMG etc every 3
days.
More and you are wasting the stuff.
By doing 50% weekly watrer changes you can re set the tank each week
and ensure a relatively constant level of PO4/NO4/K etc by dosing the
following per 20 gallon tank:

1/4 teaspoon K2SO4 once a week after water change
" " " KNO3 2-3x a week
2-4 rice grain's worth of KH2PO4 2-3x a week
5 mls of TMG/Flourish 2-3x a week.

Do 50% water change which removes any dosing errors you made with the
other mid week dosings. Repeat.

Becomes old hat fast.

Regards,
Tom Barr

Iain Miller 20-04-2003 06:22 AM

adding PO4 and KNO3 to eliminate algae?
 

"Dave M. Picklyk" wrote in message
...
Can adding P04 and KNO3 reduce and eventually eliminate algae? I've heard
rumbles about this around here. Can anyone explain that to this newbie?

Would I have to test my PO4 and Potassium levels before making any
decisions?

I've been doing C02 (33ppm) for about 2 weeks now and algae has started to
grow onto new plants I've added. I've also added 25 neons in the last week
but am feeding them once every two days (higher nitrate levels?). Light is
2wpg PowerGlo bulbs on a 15 gal wide tank. I'm adding Ferreal +spureal
mineral fertilizer for trace elements and iron, iron averaging out about
2-3.5ppm. I'm also doing 25% water changes every week.

I will be getting a pomacea bridgsii snail soon, but I want to find out

the
root of the problem.

Dave.
www.okcomputerworks.com/aquarium.html


AFAIK with fish in the tank your iron doesn't want to be much above 1ppm -
any more than that doesn't do them a lot of good!




[email protected] 20-04-2003 06:22 AM

adding PO4 and KNO3 to eliminate algae?
 
Dave.
www.okcomputerworks.com/aquarium.html


AFAIK with fish in the tank your iron doesn't want to be much above 1ppm -
any more than that doesn't do them a lot of good!


Ditto.

You will need to make sure there's enough NO3, PO4, K, GH(3 or
higher).
You can back off the traces, for a 20 gallon tank, the max amount
needed at high light etc is about 5 mls of Flourish/TMG etc every 3
days.
More and you are wasting the stuff.
By doing 50% weekly watrer changes you can re set the tank each week
and ensure a relatively constant level of PO4/NO4/K etc by dosing the
following per 20 gallon tank:

1/4 teaspoon K2SO4 once a week after water change
" " " KNO3 2-3x a week
2-4 rice grain's worth of KH2PO4 2-3x a week
5 mls of TMG/Flourish 2-3x a week.

Do 50% water change which removes any dosing errors you made with the
other mid week dosings. Repeat.

Becomes old hat fast.

Regards,
Tom Barr


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