5mm (3/16") gravel too big? - The Planted Tank Forum
 
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post #1 of 2 (permalink) Old 02-23-2011, 04:34 PM Thread Starter
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5mm (3/16") gravel too big?

Hi all, I'm fairly new to all this.

Have a Juwel 190 corner tank that currently has sand in it.

Unfortunately I'm not getting on with the sand I find that on my weekly water change, when I vacumn up the muck from the bottom of the tank, too much sand gets into the water, which then ends up with me scratching the glass when I clean it as invisible tiny particles of grit get between the glass and the cloth (I suppose I could clean the glass before cleaning the sand).

I have also had my impeller magnet break which I'm sure has been caused by bits of sand that have been sucked into my external filter.

So I'm after replacing it with something else. I went to my local fish supplies and brought a 25KG (55 lb) pea shingle then I discovered various forums.

The pea shingle is 5mm (3/16") but everywhere I look, it's recommended to use 2 - 3mm (1/16 - 3/32").

So have I thrown my money away?

I intend to plant loads, have brought a CO2 system and was thinking about simply mixing Laterite (or some other similar stuff) to part of the gravel for the bottom layer and covering the top with the rest, in order to plant my plants straight into, but now I think the gravel is too big.

If I was to go the soil route, with 5mm (3/16") gravel on top, would this be too big in that it allows the soil through please?

If it is too big for either route, what about if I was to get a small bag of 2mm (1/16") gravel and mix it with it?

Many thanks

Joe
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post #2 of 2 (permalink) Old 02-23-2011, 06:06 PM
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Keep in mind that over time, smaller particles end up on the bottom, and larger ones on top. 5mm gravel will make it difficult to plant smallish ground cover.

I wouldn't worry... often you end up redoing things over time anyway, so soil under gravel should work for a while.


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