Importance of Flow - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 05-08-2015, 12:11 AM Thread Starter
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Importance of Flow

Just something that has always bothered me and I figure someone can answer

but is flow rate truly important in our tanks?

Ive done it countless times....I can put down a layer of soil, cap it with sand, plant a single plantlet (ive done it with hairgrass, glosso, HC, MM and a few other plants) in a vase...and put it on a window sill in full sunlight

come back in a few weeks and I have an EXPLOSION of growth and 0 algae

I can take those same trimmings and move them into my high-light, med-light, low-light tank and have it over run with algae


...so how can I go from high light, high ferts, 0 CO2, 0 flow and have 0 algae issues...but go to a tank thats high/med/low light, high/med/low ferts, high/med/low CO2 and high/med/low water flow and with good water change regimens and just have problems...basically the light determines the speed of the algae take over

what am i missing here?


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post #2 of 6 (permalink) Old 05-08-2015, 12:37 AM
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Well I know in my tank I am getting algae right Noe because I am feeding heavy right now and lots of organics. Debris is also able to settle on plant leaves which then promotes algae growth.

So with other organics in the tank its easy for algae to take over a newly transfered plant that isn't yet established and thriving.

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post #3 of 6 (permalink) Old 05-08-2015, 01:04 AM
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a small vase in a window will have adequate enough circulation through thermal cycles its not a problem, that solution isint as stagnant as you think it is.

scale this up to a deeper larger body of water and it dont work anymore.


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post #4 of 6 (permalink) Old 05-08-2015, 02:39 PM
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Comparing a planted jar to an aquarium is kind of like apples and oranges. The jar is a self contained and self balancing system where the water column will quickly run lean of nutrients. On the other hand, planted aquariums are an exercise in controlled imbalance. They're always getting inputs of nutrients either as fertilizer, fish waste, and decaying food.

Flow, and more importantly, circulation, are essential to planted tanks to provide nutrients to the plants and get the waste byproducts into the filter for processing by bacteria. One can have insane flow, but poor circulation, hit all the numbers right, and still have algae problems and/or poor growth.
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post #5 of 6 (permalink) Old 05-09-2015, 12:24 AM
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I agree with Phil. Circulation is vital in a planted tank. The number of gallons for your pump does not equate to proper circulation. Directing flow to provide mixing of the entire body of water is the key.

Phil explained you need circulation for nutrients and waste. An analogy helps sometimes.

Imagine a large neighborhood of people that survive on Pizza. It's a great life until the delivery service fails. Some people get their food and others wither away. If the same neighborhood loses trash collection those houses become overrun and quickly lead to illness from all the rotten food lying around.

We want adequate delivery of water to each plant so we never have those problems.
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post #6 of 6 (permalink) Old 05-09-2015, 12:33 AM
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Ive found that if you get a small sway on the plants in all areas of the tank, you reduce algae.


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