DIY Coil Denitrator Questions

Yup, I'd agree that a planted tank (or plants somewhere) would definitely help with nitrate removal. I really wasn't going to get into live plants, but I may.

I was actually thinking about mebbe an algae scrubber, which I guess is still live plants.

Do you have any pics or links to a DIY plenum? I'd like to see that.
 
SMinNC... one more thing since I have your ear.....

Do you think a UV Sterilizer in the same tank would render the coil denitrator useless?
 
I don't have any experience with either. And I don't remember all the details about the denitrator coils.
All I really remember is the possibility of the thing doing something bad if it weren't made and maintained perfectly.
Some of the stuff I can think of that could be a problem. Don't go quoting me about this. It was years ago when I read about them quite a bit and decided it wasn't worth the potention risks.

Stuff like. Needing X length of X dia. tubing, chamber, etc. Then have the perfect X of gph running through it.

I don't recall what all was supposed/desired to happen with the chemical reactions. But I'm pretty sure if all of these details don't work out just right. Bad stuff comes out and into your water. Something like nitrogenpoxidacytlene curuptousandorkillsus or somethin'. LOL Whatever it was/is ain't good for fish.
 
I started this post last night and got booted by AC updating. I have the habit of copying what I've typed once in a while, because I like to reach for the mouse and hit the back button on the side of it. And poof, all gone. So I get to start from their. ;)

============================

Yesterdays stuffs...

Do you have any pics or links to a DIY plenum?

Bob Goemans, found here > http://www.saltcorner.com/1024/index1024.htm

You would have to buy his books or one of'em to get the good stuff from him. Gotta make a living some how. :huh:

This one says it has...
"Constructing the Plenum Living Sand System"
and
"Freshwater Plenum Systems"
http://www.saltcorner.com/1024/index1024.htm

Hummm? Someone besides me has done it! Kinda makes me wonder if I was first?(in FW) LOL I know, how ya gonna prove it, and does it really matter.
Although he had never mentioned it, back when I was reading his stuff in magazines. And most of what I read was kind of like one of our DIY Build threads. Doing it and telling about it, all at the same time. And 100% about SW.
-

The other guy and maybe the originator. Was John Tullock.

This guy > http://www.amdareef.com/mbr_tullock.intro.htm
And countless other links for him.
Do a search on him, and you'll see.
-

Today.....

Heres some instructions I just found > http://www.pgjr.alpine.k12.ut.us/aqua/plenum.html#Figure1

I didn't read them. But looks just like what I done by the pictures. Except for one thing.
I wraped the egg crate with the screen.

As in...
Lay screen on table.
Lay egg crate on it.
Fold screen over it, with some silicone hear and there to hold it.
Then siliconed the pvc tubes to that.(ok, 2 things different)
It wasn't all nice n snug, but kept everything where I wanted it while moving it around. It sounded better than arguing with it in the tank.

I think I had 2" of playsand on top of it.
Also, if it didn't mention it. I made it small enough that I'd have about an inch of substrate all the way around it. it seems that All of our bacterias prefer darkness.

And like I mentioned about the Denitrator tubes, or probably any denitrator. This needs to be real close on exactness too. Mainly amount of open area and depth of substrate.

I did use his ideals for both of those, per sw/reef.
It was a few yrs back, and I don't remember the exacts on either.

Do some searching on "plenum" and you should be able to find something out there on the size for them.

Or, buy his book. ;) Obviously he's done fw too, now.

And a P.S.
And again, no qoutin'. As in, research it, before trying it. I'm just trying to give some heads-ups, info stuff. That could need considered.

In SW for a substrate. I think he used two different types. I'm pretty sure, it was argonite for the bottom layer. This was helping with the calcium lvl in the water for corals. Something about the water in the open area(plenum), would drop in pH to something like 5.?. Which the aragonite would react to, releasing calcium.
And a good reason for him to wonder how long the substrate would last. Would it end up self-destructing etc.
I quit getting my magazine subscriptions long before he would have been able to write about long term affects.
And well... then the internet came around. Ya AOheL. And yea, I started refering to it as that, after I figured out I could use anybody and IE. :)
 
The only real success I had with nitrate removal was with low light house or rain forest plants growing out of my HOB filter void hydroponically. However the cycle from high success to plant death and consequently no nitrate removal is always the same. At first becasue the plants have plenty of insecticide in their system which does not hurt the aquarium fish as the plans are washed off including roots and insecticide is inside the plant system having just come from the nursery.

In the first 8 weeks the plants grow rapidly robustly and nitrates fall dramatically between 5 PPM 0 PPM for almost that same amount of time. Then eventually the plant becomes infected with microscopic leaf sucking spider mites and because all the insecticide in the plants system has neutralized the plant has no protection against the mites which devastate the plant leafs sucking them dry and the plants starts wither fast as if it has no water.

Although this is a common and very treatable/preventable plant disease, you cannot use any of the insecticides available as they are all toxic to the fish unless you remove the HOB from the aquarium go outside mask off the HOB in plastic and spray the plants and let the insecticide dry. But who wants to go through all that trouble every week. But I continue to try different type plants and safe insecticides like garlic juice with marginal success against an insect that has evolved to be resistant to most organic remedy's and requires toxic chemicals to control them.

I'm currently experimenting with allowing the side small panel of the aquarium closest to the window grow algae while using the sterilizer to control bloom. With my sterilizer on 12 hours at night (timer) algae has never been able to bloom, only grow slowly on the glass which is cleaned off once every 2 months. This time I am letting the side sunny panel grow unchecked with strong sunlight 6 hours a day. My hope is once carpeted nitrates will fall.
 
In the first 8 weeks the plants grow rapidly robustly and nitrates fall dramatically between 5 PPM 0 PPM for almost that same amount of time. Then eventually the plant becomes infected with microscopic leaf sucking spider mites and because all the insecticide in the plants system has neutralized the plant has no protection against the mites which devastate the plant leafs sucking them dry and the plants starts wither fast as if it has no water.


.
I have had no problems with the plants in my HOB-might have something to be with location, we might not have a lot of mites like that around here. There are many pothos stems that have been in there MUCH longer than 8 weeks and are still growing great. It keeps the nitrates super low in my pretty well stocked 150
 
I have had no problems with the plants in my HOB-might have something to be with location, we might not have a lot of mites like that around here. There are many pothos stems that have been in there MUCH longer than 8 weeks and are still growing great. It keeps the nitrates super low in my pretty well stocked 150

I haven't tried Pothos yet as I have mostly bee sticking to fast growing Ivy. I almost bought some last week but wasn't sure whether to get the climbing variety with the climbing spurs or the what they call the upright variety. I noticed the out Mom & Pop LFS Pothos plants seemed to be doing well growing out of their aquariums out here probubly becasue they are so common a house plant that they have developed resistance to leaf mites which you cant see, only the speckles on the leaves followed by leaf death, then plant death. I have heard that coating the Pothos leaves with a thin sheen of mayonnaise makes them impervious to insects.
This is the type below I want to buy and try next. Notice the climbing spurs needed to climb clear of the HOB and aquarium.
plants-pothos%20103.jpg
 
AquariaCentral.com