best way to change substrate.. - The Planted Tank Forum
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post #1 of 21 (permalink) Old 09-05-2006, 01:21 AM Thread Starter
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best way to change substrate..

so i don't want to tear my tank down, but like the title says, i want to change my substrate. i have the bottom half eco complete, and the top half small black gravel. but, i want to change the entire thing over to eco complete. so how do i go about 'scooping out' the top layer without completely tearing up the tank?

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post #2 of 21 (permalink) Old 09-05-2006, 01:37 AM
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I changed out a few of my tanks from flourite to ada soil. I used a hose that was a little larger that the substrate in question, and vaccummed it up. I had the other end of the hose in a large tub.... worked like a charm. Added my new substrate and water, cloudy for a day or so but done.

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post #3 of 21 (permalink) Old 09-05-2006, 01:40 AM Thread Starter
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how would that work? the gravel is too heavy to be pulled up just from the siphon.

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post #4 of 21 (permalink) Old 09-05-2006, 01:47 AM
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how would that work? the gravel is too heavy to be pulled up just from the siphon.
No its not.

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post #5 of 21 (permalink) Old 09-05-2006, 01:57 AM Thread Starter
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well maybe i'm an idiot, but my gravel doesn't come up when i do my water changes, so how can i get the gravel to suck out?

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post #6 of 21 (permalink) Old 09-05-2006, 02:01 AM
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lower the bucket.

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post #7 of 21 (permalink) Old 09-05-2006, 02:02 AM Thread Starter
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uh, the bucket is on the floor..

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post #8 of 21 (permalink) Old 09-05-2006, 02:04 AM
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longer hose then.

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post #9 of 21 (permalink) Old 09-05-2006, 02:09 AM Thread Starter
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i'll try this, but it's not making sense. maybe i'm just captain de de de. (for those of you that got that, LOL) if anyone can explain it a little clearer, or has another way, please tell me.

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post #10 of 21 (permalink) Old 09-05-2006, 02:26 AM
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Sorry, I have just never had an issue siphoning out gravel.

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post #11 of 21 (permalink) Old 09-05-2006, 02:40 AM
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Ah, the issue:

One: the siphon you use that doesn't get the gravel, does it have a little cup like thing on the end that's got a wider mouth than the hose? if so, then take the cup thingie off and you'll be sucking up gravel. it's kind of a physics thing, I think. Also, make sure the hose is wide enough for the gravel. That SHOULD work. I recall fixing the problem with the gravel coming up by sticking a funnel on the end of the hose, so reversing the process should well, reverse the process.

Two: if you're just using a straight hose and you're still not getting gravel... um, maybe you have large rocks? :P

Three: if neither of these options will do it for you, I recommend using your fish net. That's what I do. It's time-consuming, but it works. (I usually do this to fish out snails if people are wanting some)
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post #12 of 21 (permalink) Old 09-05-2006, 02:46 AM Thread Starter
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oh yeaaaa a FISH NET. (de de de) i don't know why i didn't think of that.. seems like a little better idea, because it won't be pulling out water at the same time. AH HA!

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post #13 of 21 (permalink) Old 09-05-2006, 03:55 AM
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longer hose then.
How is a longer hose going to help?
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post #14 of 21 (permalink) Old 09-05-2006, 03:56 AM Thread Starter
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i was wondering the same thing. if it's hitting the floor, it's hitting the floor.

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post #15 of 21 (permalink) Old 09-05-2006, 03:58 AM
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I have found that the farther the water flows in a hose it picks up force.

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