Switching an Established Tank from Low to High Light - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 02-02-2014, 03:39 PM Thread Starter
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Switching an Established Tank from Low to High Light

I've had my tank set up for a while now. Nothing fancy, just low lighting and dosing excel and flourish a couple times a week. Everything is going smoothly right now, not much algae, fish are healthy, etc., but I'd like to be able to grow a larger variety of plants.

I'm planning to upgrade to medium-high light, add CO2 (pressurized), and start EI dosing. I've got all the equipment that I need ready to go, but I'm just wondering what the best way to go about adding these changes is. Can I upgrade everything at once, or is there something I should do to make the changes less sudden?
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post #2 of 9 (permalink) Old 02-02-2014, 03:50 PM
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I would think the best way would be to start a little ei then add co2 and then upgrade the lights. Doing it all gradually.
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post #3 of 9 (permalink) Old 02-02-2014, 04:21 PM
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I don't think whether you do this overnight or over a week is as important as how quickly you find the right balance. Since the real challenge is matching lighting to nutrients, I would slap in the new lights and turn on the pressurized CO2 the same day. Monitor the CO2 bubble rate very closely for the first few hours to make sure it is stable. Once you have the CO2 right where you want it (however you decide to determine that), start dosing ferts. Tweak all the above based on your hyper-vigilance and feedback from what is happening in the tank.

The primary danger to your fauna is overdosing CO2, so dial that in first and let the plants tell you were to go from there.

In any case, the above is my plan for a very similar situation.

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post #4 of 9 (permalink) Old 02-02-2014, 04:29 PM
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Start full EI

Get your co2 as high as possible,
increased surface agitation will allow to you really crank it up

Blast it with light


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post #5 of 9 (permalink) Old 02-02-2014, 04:38 PM Thread Starter
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Thanks for the feedback!

So I think I will add the new lights, and then slowly increase the amount of CO2 being injected while monitoring levels with a drop checker. And then once that is in the green I can start EI.

Seems like a good way to do it, get the two most important factors balanced, and then start EI, which doesn't need to be too precise.
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post #6 of 9 (permalink) Old 02-02-2014, 04:50 PM
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Let's plan this out logically.

High light requires CO2 and Ferts.

CO2 works at most light levels but needs ferts to be utilized.

Fertilizer is the backbone for the other two to operate.

So start ferts, then balance the CO2, and finally upgrade the lights.
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post #7 of 9 (permalink) Old 02-02-2014, 05:21 PM
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You're doing it backwards.

Ferts first

CO2 second

Lights last

You don't want to put your new supernovablasto lights on your tank and then start trying to figure out how to dose EI and CO2 tuning. Trust me on this one.


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post #8 of 9 (permalink) Old 02-02-2014, 09:14 PM Thread Starter
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Evidently I have a lot to learn about planted tanks. I'm glad you guys are here to help.
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post #9 of 9 (permalink) Old 02-04-2014, 02:50 PM
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Quote:
Originally Posted by TDV View Post
Evidently I have a lot to learn about planted tanks....

Me too I guess. But since it takes maybe 10 minutes to figure out EI dosing and another half hour to dial in a bubble rate and then days or even weeks to get the lights just so, you end up doing most of your futzing all at once.

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