Sand Help? - The Planted Tank Forum
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post #1 of 6 (permalink) Old 09-25-2006, 05:13 AM Thread Starter
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Red face Sand Help?

Ok, Hi all havent been here in a while and I have been neglecting my tank for about 7-8 months. by neglecting I mean no dosing, once a month water change and no trimming. Now my hairgrass Is covered in hairy algae and isnt growing as well as before. Yes I know not dosing is part of the cause but I have noticed that my sand has settled? All thwe large particles are on top while all the finer particles have settled down to the bottom. Could this Inhibit root growth? I have also noticed small pockets of air in the sand around plant roots. Is this cause for concern? opinions please...

P.s. I am trying to whip my tank back into shape...
sorry to ramble..
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post #2 of 6 (permalink) Old 09-25-2006, 05:28 AM
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That was what I saw right before my tank with the sand substrate totaly crashed. The tank did great untill gas started to build up in the substrate. As I broke up the gas pockets it stunk to high heaven. The sand also got into my filters and destroyed the impellers and cost me a lot of $ to replace filters.
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post #3 of 6 (permalink) Old 09-25-2006, 05:35 AM Thread Starter
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Maybe I could just siphon the sand out?? Would this be dangerous to the fish?
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post #4 of 6 (permalink) Old 09-25-2006, 07:35 AM
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Originally Posted by dogg76 View Post
Maybe I could just siphon the sand out?? Would this be dangerous to the fish?
Doubt it. But I am no expert.

Ehfipimp #273 ( Eheim Classic: 2260, 2217, Eheim Ecco: 2236, 2232 ) Fluval FX5

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post #5 of 6 (permalink) Old 09-26-2006, 08:18 AM Thread Starter
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Bump! Come on guys?
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post #6 of 6 (permalink) Old 09-26-2006, 12:02 PM
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Try find out what kind of gas the pockets are made of. When you stir it up and it smells like rotten eggs then you know its a sulfide gas and poisionous (to you and fishies!). As you suggested it may be of the increased anaerobic conditions from the sifting of sand. Not sure how you'd go around that, maybe remove fishes and stir up the sand abit or a grav vac will get some o2 down there.

On the other hand it could just be excess o2 in your gravel or even N2 (bubbles dont give off any smell). As you meantioned that the bubbles formed around your plants only (or am i imagining things?) plants who are growing really well actually bring oxygen down to their roots therefore preventing any anaerobic conditions. N2 can result from the right bacteria growing in the right anaerobic conditions.

I say this because it's whats happening in my tank (according to walstard). I have a clay/laterite base with 2mm gravel to top it off. I always have small bubbles in the gravel and every so often a large bubble escapes the substrat. Initally i was cautious but the tank smells...well like a healthy fish tank and there's never a wiff of rotten eggs, no matter how much of this gas escapes. Tanks been running for close to a year now so i'm still cautious (sulfies might me slowly building) but i'm not paranoid that the tank is going to crash anytime soon.
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