All times are UTC + 8 hours




Post new topic Reply to topic  [ 110 posts ]  Go to page Previous  1, 2, 3, 4, 5 ... 8  Next
Author Message
PostPosted: Jul 30th, '08, 20:37 
Offline
Almost divorced
Almost divorced
User avatar

Joined: Apr 6th, '07, 19:29
Posts: 1213
Location: SOUTH AFRICA
Gender: Female
Are you human?: yes
Location: Hartbeespoort. SOUTH AFRICA
hydrophilia wrote:
Or grow something like pumpkins that trail far beyond the growbed.


O yes HP! :D You think fish eat pumpkin leaves. They are edible for us. More free food then..... Anyone ever tried?

_________________
Chelle.

The cure for boredom is curiosity. There is no cure for curiosity. Ellen Parr

All truth passes through three stages. First, it is ridiculed, second it is violently opposed, and third, it is accepted as self-evident.
Arthur Schopenhauer


Top
 Profile  
 
    Advertisement
 
PostPosted: Jul 31st, '08, 11:24 
Offline
Xtreme Contributor
Xtreme Contributor
User avatar

Joined: Dec 29th, '07, 04:25
Posts: 156
Location: Southwest USA
Gender: None specified
Are you human?: YES
Location: ATX
Not sure if anyone has seen these:
http://www.northcoastmarines.com/bioballs.htm

These could really throw the depth of growbeds off a bunch :) Might be good space savers for keeping the growbeds/biofilters to a minimum size. I'm doing a micro set-up and plan on using these.


Top
 Profile  
 
PostPosted: Jul 31st, '08, 12:30 
Offline
Legend Member
Legend Member
User avatar

Joined: May 28th, '07, 16:24
Posts: 664
Location: Adelaide
Gender: Male
Location: South Australia, AUS
fishygrown wrote:
Not sure if anyone has seen these:
http://www.northcoastmarines.com/bioballs.htm


From the site
Quote:
They are inexpensive, and easy to use. Much easier to use and more surface area than lava rock

At $150 for just under 40 gallons, I'd question the inexpensive part.
I'd question the surface area claim too - smooth plastic vs rough rock, rock has pores and irregularities that plastic doesn't? I'm not sure though, the claim might be valid.
Rock also may release minerals for plant use.


Top
 Profile  
 
PostPosted: Jul 31st, '08, 13:10 
Offline
Almost divorced
Almost divorced
User avatar

Joined: Oct 17th, '07, 12:03
Posts: 1492
Location: Sonoma
Gender: Male
Are you human?: Y: I have affadavit
Location: Sonoma, California, USA
Cyara wrote:
hydrophilia wrote:
Or grow something like pumpkins that trail far beyond the growbed.


O yes HP! :D You think fish eat pumpkin leaves. They are edible for us. More free food then..... Anyone ever tried?


Cyara,

Actually, I thought the pumpkins (which can run for meters) would suck more nitrates from the water than the equivalent bush-type squash, thus allowing you to remove lots of nitrates without needing as much area planted (ie: a deep/narrow growbed can work as well as a shallow/wide one for removing nutrients if it supports the same amt of plants.....roughly speaking)

I hadn't thought of pumpkin leaves as edible, but every day, as I harvest male squash flowers and use them to pollinate the females, I contemplate tossing the remains into the fish tank. Maybe tomorrow. :) Maybe I'll munch one myself, but the scent is not quite.....

_________________
This has been a test life. It is only a test. If this had an actual life you would have been given instructions on where to go and what to do.

WARNING: I suffer from ideaphoria. This post may contain untested ideas, errors, and excessive enthusiasm.


Top
 Profile  
 
PostPosted: Aug 1st, '08, 04:05 
Offline
Xtreme Contributor
Xtreme Contributor
User avatar

Joined: Dec 29th, '07, 04:25
Posts: 156
Location: Southwest USA
Gender: None specified
Are you human?: YES
Location: ATX
steem wrote:
fishygrown wrote:
Not sure if anyone has seen these:
http://www.northcoastmarines.com/bioballs.htm


From the site
Quote:
They are inexpensive, and easy to use. Much easier to use and more surface area than lava rock

At $150 for just under 40 gallons, I'd question the inexpensive part.
I'd question the surface area claim too - smooth plastic vs rough rock, rock has pores and irregularities that plastic doesn't? I'm not sure though, the claim might be valid.
Rock also may release minerals for plant use.


Well I'll tell you how it goes. I'm still probably 2-3 months out from a fully cycled system, but I'll be sure to post what I've found out.


Top
 Profile  
 
PostPosted: Aug 1st, '08, 04:26 
Offline
Legend Member
Legend Member

Joined: Mar 20th, '07, 12:55
Posts: 761
Location: lincolnshire
Gender: Male
If you need a cheap source of surface area for bacteria.. you could grow it :wink:
One rye grass plant can have a root area of over 4000 sqft after 4 months, or about equal to a 7ft x 7ft x 1ft deep gravel bed. You still need the gravel to deal with the solids though.


Top
 Profile  
 
PostPosted: Aug 1st, '08, 12:02 
Offline
Xtreme Contributor
Xtreme Contributor
User avatar

Joined: Dec 29th, '07, 04:25
Posts: 156
Location: Southwest USA
Gender: None specified
Are you human?: YES
Location: ATX
Yeah I plan on using gravel in the top 2 thirds of the containers, but the bottom third will be those bio-balls.


Top
 Profile  
 
PostPosted: Aug 1st, '08, 23:39 
Offline
A posting God
A posting God
User avatar

Joined: Apr 3rd, '08, 01:57
Posts: 2256
Location: Australia Sydney
Gender: Male
Are you human?: yes
Location: Gods own country,Sydney South
Pumpkin flowers are a delicacey,.....,you guy's throwing them away are VERY lucky my mother-in-law can't read English :shock: :D

Anyone want the Thai recipes???

Someone else on here noted that passion-fruit vines can pull huge amounts of nutrients out,,so those are another option.

_________________
I call a Spade a Spade,,,you can turn it upside down and paint itred but it's still a Spade.


Top
 Profile  
 
PostPosted: Aug 2nd, '08, 11:24 
Offline
Valued Contributor
Valued Contributor

Joined: Sep 15th, '07, 18:47
Posts: 93
Location: Brisbane, Queensland
Gender: Male
and pumpkin leaves used to make the cows go high at a certain time off year (memory from childhood), so if your fish act a little strange.


Top
 Profile  
 
PostPosted: Sep 17th, '08, 01:16 
Offline
Almost divorced
Almost divorced

Joined: Dec 9th, '06, 20:31
Posts: 1079
Location: Drongen, Belgium
Gender: Male
Location: Drongen, Belgium
Excellent info, TCL
about the vermiculite castings and where to add them
Thanks

Frank


Top
 Profile  
 
PostPosted: Sep 17th, '08, 20:40 
Offline
Almost divorced
Almost divorced
User avatar

Joined: Apr 6th, '07, 19:29
Posts: 1213
Location: SOUTH AFRICA
Gender: Female
Are you human?: yes
Location: Hartbeespoort. SOUTH AFRICA
Chappo wrote:
Pumpkin flowers are a delicacey,.....,you guy's throwing them away are VERY lucky my mother-in-law can't read English :shock: :D

Anyone want the Thai recipes???


Yes! Please..... :D

_________________
Chelle.

The cure for boredom is curiosity. There is no cure for curiosity. Ellen Parr

All truth passes through three stages. First, it is ridiculed, second it is violently opposed, and third, it is accepted as self-evident.
Arthur Schopenhauer


Top
 Profile  
 
PostPosted: Sep 17th, '08, 20:47 
Offline
Almost divorced
Almost divorced

Joined: Dec 9th, '06, 20:31
Posts: 1079
Location: Drongen, Belgium
Gender: Male
Location: Drongen, Belgium
Quote:
Anyone want the Thai recipes???

yes please

isn't there a thread for recipes?

better to post them there, I think

Frank


Top
 Profile  
 
PostPosted: Sep 28th, '08, 19:42 
Offline
Almost divorced
Almost divorced

Joined: Dec 9th, '06, 20:31
Posts: 1079
Location: Drongen, Belgium
Gender: Male
Location: Drongen, Belgium
Quote:
300mm seems to be a good MINIMUM depth.

NFT systems seem to contradict that
nitrification is all about surface and aeration, not about depth
TMHO depth is required mainly for stabilizing the heavier plants

frank


Top
 Profile  
 
PostPosted: Sep 28th, '08, 20:03 
Offline
Seriously, this cant be healthy.
Seriously, this cant be healthy.
User avatar

Joined: Nov 16th, '06, 08:44
Posts: 27177
Location: Gerringong
Gender: Male
Location: NSW Australia
NFT systems in traditional hydroponics systems don't provide any real nitrification at all... the nutrient mixes are designed to provide the plant needs....

Those using NFT in aquaponic systems do so by pre-filtering solids... and usually incorporate the NFT component as an end point "polishing" of nutrient/nitrate loaded water...

Again as such, IMO, perform at best very minimal nitrification... and aren't intended to primarily do so.... depth of water and continuous relatively high flow wouldn't really dispose such system components to any degree of nitrification...

And the quantities of any media involved (if used) are miniscule in comparison to growbeds, bead filters etc....

High flow continous floating raft raceways (ala UVI) rely on the raft surface areas which are considerable and obviously perform a level of nitrification...

Continuous flow growbed systems haven't been found to perform as well as flood and drain, regardless of depth....

But, on the other hand trickle filters and fluid sand filters, all bead filters etc... all perform better with a degree of depth... albeit that the depth in such systems means a greater volume of filtration media... hence increased surface area as Frank suggests...

Yes... the 300mm depth is partially for plant support.... but probably also affects/helps with the breakdown of solids...

_________________
>

Fresh By Nature - Distributor of Aquaponic Systems and Products in NSW
http://www.freshbynature.com.au


Top
 Profile  
 
PostPosted: Sep 28th, '08, 20:52 
Offline
Almost divorced
Almost divorced

Joined: Dec 9th, '06, 20:31
Posts: 1079
Location: Drongen, Belgium
Gender: Male
Location: Drongen, Belgium
Quote:
But, on the other hand trickle filters and fluid sand filters, all bead filters etc... all perform better with a degree of depth... albeit that the depth in such systems means a greater volume of filtration media... hence increased surface area as Frank suggests...

that is a wrong assumption and a misquote:
I suggest that with all bio filters only contact surface is all important and depth absolutely irrelevant, even counterproductive: water that has passed a first "healing" layer of media will be O2 depleted and thus impede the good functioning of below layers.

so a shallow biofilter will necessarily perform better than a deep one

frank


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 110 posts ]  Go to page Previous  1, 2, 3, 4, 5 ... 8  Next

All times are UTC + 8 hours


Who is online

Users browsing this forum: ccBear, Yahoo [Bot] and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

Powered by phpBB® Forum Software © phpBB Group
Portal by phpBB3 Portal © phpBB Türkiye
[ Time : 0.562s | 17 Queries | GZIP : Off ]