Questions about lily pipe intake - The Planted Tank Forum
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post #1 of 4 (permalink) Old 09-12-2013, 05:15 AM Thread Starter
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Questions about lily pipe intake

I have a quick question for you all. I have a 75 gallon tank with a Fluval 406 filter. I purchased a set of lily pipes and the intake is the typical design where there are slits in the glass toward the bottom.
Are these openings sufficient for optimal flow for the filter? The stock intake seems less restrictive but I would like to use the glass one for a better appearance. Also, the glass intake only reaches a little more than halfway down my tank. Will this hurt anything?
Basically I am asking if anyone knows if the glass lily pipe intake would reduce flow due to the smaller slits, and if it is necessary for it to reach to the bottom of the tank.
Any help on this would be appreciated! Thanks!
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post #2 of 4 (permalink) Old 09-12-2013, 12:31 PM
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Any intake that is not just an open tube is going to restrict flow. I've known some guys that cut off the bottom of the intake and use a pre-filter sponge or a SS prefilter in place as they feel it less restricting.

As it sits the intake should do just fine. There are enough people that use them without ill effects. I've found the glass intake tend to clog quicker than the conventional style plastic intakes, so keep an eye on it.

Concerning the placement of the intake itself, this also should not matter all that much. As long as you have adequate water circulation in the tank, your filter will do its job. If you are getting dead spots in the tank, try changing your return position or add a powerhead(s) to ensure proper water circulation.
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post #3 of 4 (permalink) Old 09-13-2013, 12:19 PM Thread Starter
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Thanks for the insight! I was thinking of cutting the bottom off and doing something similar. Although for now I am going to stick with the stock Fluval intake, the more I stare at the glass one the more it looks like a complete pain to keep clean.
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post #4 of 4 (permalink) Old 09-13-2013, 04:41 PM
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I've been using glass for a while, and comparing the flow of the stock vs the glass, I didn't notice any difference. Cleaning it can be easy, just pass the python vacuum over the slits and it should be fine.

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