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Old 09/09/2018, 10:58 AM   #651
gregkn73
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Join Date: Dec 2013
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Without trying it, how can be sure which is more effective? I have a separate tank 60lt deep sand bed, which can not be compared to 12lt Donovan's reactor , not only as far efficiency but also controllability, at reducing no3.
Quote:
Originally Posted by hottuna View Post
Nitrate Destroyer ?...LOL ! you could just as easily put a plenum (Jaubert method)in a separate tank with 4-6" of FCC substrate plumb it inline with your main tank and see ZERO nitrates without having to use additives etc....



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Old 09/09/2018, 11:40 PM   #652
Timmste
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I started mine yesterday.. flow is too high though.. but I am curious what the effect on no3 will be with this flow rate.

contains 15L
65 cm high

Verstuurd vanaf mijn SM-G930F met Tapatalk


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Old 09/09/2018, 11:52 PM   #653
Timmste
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Quote:
Originally Posted by Timmste View Post
I started mine yesterday.. flow is too high though.. but I am curious what the effect on no3 will be with this flow rate.

contains 15L
65 cm high

Verstuurd vanaf mijn SM-G930F met Tapatalk
https://youtu.be/qNb9iWtLtQE

Verstuurd vanaf mijn SM-G930F met Tapatalk


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Old 09/10/2018, 03:16 AM   #654
hottuna
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Quote:
Originally Posted by gregkn73 View Post
Without trying it, how can be sure which is more effective? I have a separate tank 60lt deep sand bed, which can not be compared to 12lt Donovan's reactor , not only as far efficiency but also controllability, at reducing no3.
a deep sand bed is a whole lot different than a bed with a plenum underneath. Read up on the Jaubert method.
It works ,very efficiently . a "natural" nitrate reducer without having to input a carbon source...


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Old 09/10/2018, 09:57 AM   #655
dingodan87
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Also to achive layering of various size substrates would require me to order alot online. Localy i have fluval biomax rings, calcium reactor media and marine pure spheres. Is it necessary to layer the different sizes as shown? I notice the dymico only uses calcium reactor media and i will be utilizing a manual backwash feature in mine. This question may be best suited for donovan sad to hear he passed

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Last edited by dingodan87; 09/10/2018 at 10:36 AM.
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Old 09/21/2021, 08:49 PM   #656
xtalxtal
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Join Date: Sep 2021
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Hallo guys. I read all threads in clay-boa about DND and also this thread.
I want to use big DND 6 inch pvc pipe, 1 m high, twin tower, U shape. It should be maintain NO3 in my farm, for fish and corals sps dominant. I want to use ATS as Phosphate removal. Small skimmer runs only night for maintain the CO2 contain.
I will go through small carbon dosing about 6 times/day.
How can I apply DND for such farm with variable loads bi weekly? Fishes and coral frags coming in and out.
I have 8 tanks/systems each 3000 l (about 800 gallon)
Any suggestions will be appreciated.

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