Mebbid's high tech 40b journal

[schoeplein]

Purigen won't really remove tannins. Carbon is pretty beast at removing tannins, however.

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[Sk3lly]

Purigen won't really remove tannins. Carbon is pretty beast at removing tannins, however.

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I agree doesnt purigen do something with nitrogenous wastes??


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[mattcham]

Won't carbon and purigen both absorb fertilizers?

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[Fishperson]

Won't carbon and purigen both absorb fertilizers?

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They did a study on that and usually plants absorb the fertilizer before carbon does. I don't know about purigen.

 

[schoeplein]

Purigen has a very limited capacity for absorbing ferts. Carbon can and will remove heavy metals like iron. Fortunately it maxes out its capacity with biological and other matter more readily. I can guarantee carbon will remove tannins, but I wouldn't run it 24/7 on a planted tank. Just enough to clear out the tannins. I run Purigen 24/7 and have even recharged several bags without issue.

Seachem. Purigen

 

[mattcham]

How is purigen versus carbon for removing tannins in your experience? If one is better, is it 2x better?

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[Mebbid]

How is purigen versus carbon for removing tannins in your experience? If one is better, is it 2x better?

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If carbon is a 10 out of 10 then I'd say purigen is maybe a 6 out of 10. It's not great, but it does work. That being said, I'd choose purigen over carbon any day.

 

[Sk3lly]

I think carbon needs replacing fairly regularly as it loses its efficiency


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[Mebbid]

I think carbon needs replacing fairly regularly as it loses its efficiency


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It does, at the very most it can last month for the higher quality carbons but more often it's about 2 weeks.

 

[Sk3lly]

It does, at the very most it can last month for the higher quality carbons but more often it's about 2 weeks.

Yea that sounds about right


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[mattcham]

I know purigen is easily recharged by bleaching. Can carbon be recharged by baking or is that just a myth?

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[Mebbid]

I know purigen is easily recharged by bleaching. Can carbon be recharged by baking or is that just a myth?

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That's just a myth. Carbon can't be recharged.

 

[Mebbid]

I found some DHG on sale in the tissue culture packs so I decided WTH and am going to give it another shot. Also, some updated pictures! Some of the plants are doing better, some are doing worse, many are the exact same.

 

[Brookster123]

Man those tannins are hard core huh?? Once they clear I think your plants are going to go beserk..

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[Mebbid]

Man those tannins are hard core huh?? Once they clear I think your plants are going to go beserk..

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Haha yeah, its that enormous piece of wood. I certainly hope it does. It clears up a bit after a water change but is right back to this after a few days.

 

[mattcham]

You have no interest in boiling that wood? Too much hassle to remove at this point?

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[Mebbid]

You have no interest in boiling that wood? Too much hassle to remove at this point?

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I boiled that chunk of wood for 6 hours in my big brewing pot, stored it in a container changing the water out daily with fresh boiling water for 2 weeks, and then had it in my tank for about 3 months in the past. Nothing shall quench the unending supply of tannins from this beastly chunk of mopani!!!

It being a dirted tank is just compounding the issue too.. heh.

 

[schoeplein]

My dirt never really leached tannins. Get a big sack of carbon and toss it into your can. You won't regret it.

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[mattcham]

Nothing shall quench the unending supply of tannins from this beastly chunk of mopani!!!

I hear ya. I boiled my 12 inch mopani 8 or 9 times and on the 9th boil the water is still like black coffee. Its still faster to expel the tannins by boiling. When I leave the wood sitting in a bucket it takes a week before the water turns coffee black (if at all). I wonder how my local fish store cleansed their giant 4 foot long malaysian driftwood....



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[bud29]

I boiled that chunk of wood for 6 hours in my big brewing pot, stored it in a container changing the water out daily with fresh boiling water for 2 weeks, and then had it in my tank for about 3 months in the past. Nothing shall quench the unending supply of tannins from this beastly chunk of mopani!!!

It being a dirted tank is just compounding the issue too.. heh.

Oh yeah, I had a rather small piece of mopani that I boiled for over 18 hours and soaked for a week before putting it in my tank, and 2 years later it is still leeching tannins. I'm convinced mopani is just one big tannin.