Extra Fertilisation and Lesser Lighting
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Old 06-27-2013, 01:11 PM   #1
marle
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Extra Fertilisation and Lesser Lighting


I often read that extra nutrients in the water will cause the formation of algae.

But is it correct to say that even if theres excess fertilisation/nutrients in the water, if the lighting period is kept shorter than required, it will not cause excessive growth of algae?

Thank you.
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Old 06-27-2013, 02:05 PM   #2
micheljq
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Hi, this is not always the case. There are algae free aquariums with high phosphates or high nitrates.

When the plants are well established and plenty, they can suppress algae or at least slow algae a lot.

Michel.
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Old 06-27-2013, 04:10 PM   #3
plantbrain
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Quote:
Originally Posted by marle View Post
I often read that extra nutrients in the water will cause the formation of algae.

But is it correct to say that even if theres excess fertilisation/nutrients in the water, if the lighting period is kept shorter than required, it will not cause excessive growth of algae?

Thank you.
I have a lot of ferts in my tanks, but no algae that's any issues.
Very healthy plants and I am able to garden nicely.

Relative to algae, there are always excess nutrients in the water, the question is, what is your goal? To grow plants? Or to limit algae?

My guess is that your goal was to grow plants.

Algae popped up because you had too much light and not enough cO2 etc typically. Poor plant growth/health= algae.

Non cO2 tanks can have long photoperiods, excess nutrients and no algae.
Same for CO2 enriched tanks.

Low light, good CO2, good ferts, lots of algae eaters= best case for good plant growth with min input for most people's goals.
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Old 06-28-2013, 02:51 AM   #4
marle
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Quote:
Originally Posted by micheljq View Post
Hi, this is not always the case. There are algae free aquariums with high phosphates or high nitrates.

When the plants are well established and plenty, they can suppress algae or at least slow algae a lot.

Michel.
Thank you for the tip Michel
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Old 06-28-2013, 02:53 AM   #5
marle
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Quote:
Originally Posted by plantbrain View Post
I have a lot of ferts in my tanks, but no algae that's any issues.
Very healthy plants and I am able to garden nicely.

Relative to algae, there are always excess nutrients in the water, the question is, what is your goal? To grow plants? Or to limit algae?

My guess is that your goal was to grow plants.

Algae popped up because you had too much light and not enough cO2 etc typically. Poor plant growth/health= algae.

Non cO2 tanks can have long photoperiods, excess nutrients and no algae.
Same for CO2 enriched tanks.

Low light, good CO2, good ferts, lots of algae eaters= best case for good plant growth with min input for most people's goals.

Thank you for the detailed reply! I have read about your posts in the planted community. Your contribution has been fantastic!

Yes my goal is to grow plants and not algae. However, recently the growth of algae far exceeds the growth of plants and i am thinking its the excessive lights that caused it. I turn on my lights for about 7-8hours only. I have since cut down to 4hours and it has curbed the growth of algae. Hoping to increase the photoperiod more as i am concerned a short 4 hour photoperiod might hinder the growth of the plants.

I have a journal too. Its located here: http://www.aquaticquotient.com/forum...-2ft-Rockscape

Last edited by marle; 06-28-2013 at 03:06 AM.. Reason: input
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