To fert or not to fert - The Planted Tank Forum
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post #1 of 6 (permalink) Old 02-05-2019, 02:42 AM Thread Starter
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To fert or not to fert

As the title suggests, should I continue adding ferts even with this brown mess? Here’s a little bit of info:

Glosso was growing straight up, so I added another Finnex Planted+ fixture. Day later, diatoms began to proliferate like mad! I’m assuming that this is the result of doubling the PAR coupled with a biologically immature tank (rescaped about two weeks ago and threw out most of the soil). I think the best mode of action is to remove as much as I can and do more water changes WITHOUT adding more ferts. I don’t want my plants to suffer but I think the consequences are marginal. I’d like a second opinion, what are my options here?
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post #2 of 6 (permalink) Old 02-05-2019, 08:31 AM
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I think your best option is to cut back that light! Goodness. Take your foot off that accelerator -- Fert OR no fert. You're right about the water changes and manual removal. But if you're still driving your plants with too much light, they ARE suffering and that bad stuff will keep coming back with a vengeance. Get your plants healthy and THEN think about that light. Aquasoil might afford you a buffer for no ferts so maybe it'll be ok in the short term until u get your algae issues under control but I still am wary about no ferts. I'd go middle ground with reduced ferts if that helps my mind? But the major player here is that light.

Do you even co2??
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post #3 of 6 (permalink) Old 02-05-2019, 10:20 PM Thread Starter
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Quote:
Originally Posted by ipkiss View Post
I think your best option is to cut back that light! Goodness. Take your foot off that accelerator -- Fert OR no fert. You're right about the water changes and manual removal. But if you're still driving your plants with too much light, they ARE suffering and that bad stuff will keep coming back with a vengeance. Get your plants healthy and THEN think about that light. Aquasoil might afford you a buffer for no ferts so maybe it'll be ok in the short term until u get your algae issues under control but I still am wary about no ferts. I'd go middle ground with reduced ferts if that helps my mind? But the major player here is that light.

Do you even co2??
As I stated, the whole premise behind the additional light was to provide optimal conditions for a glosso carpet. Plants were doing just fine with the single light, but not growing nearly as well or showing their best coloration. Since I’ve installed the new light, my arcuata and mermaidweed have developed beautiful pink hues and my glosso has begun to spread horizontally.

Thank you for your input, but I disagree that the light is the issue—I think it’s a maturity problem.
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post #4 of 6 (permalink) Old 02-05-2019, 11:59 PM
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what is your light schedule? maybe you dont need ferts, maybe you could only run two lights for a smaller portion of the day?

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post #5 of 6 (permalink) Old 02-06-2019, 07:34 PM Thread Starter
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what is your light schedule? maybe you dont need ferts, maybe you could only run two lights for a smaller portion of the day?

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That’s a good idea, right now lights are on 7 hours a day. Should I reduce the photoperiod by half?
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post #6 of 6 (permalink) Old 02-07-2019, 11:43 AM
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I think you have a few options.

you could run one light for the whole photo period, and for a small period on time in the middle run both lights.

or maybe spilt your photo period into into two 3-4 hour periods.

or reduce the one photo period.


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