chily

Pond-grow bed-raft; Need a swirl filter?

4 posts in this topic

Hello everyone,

I would like to ask for your help. I have some experiences with aquarium aquaponic (approx 100 l system), but this is something else and I would like to consult this with the skilled users.

It is necessary to use swirl filter in the setup I describe below?

Buddy has a pond on backyard since June 2018, he's got trouts there and some perches there. The volume of the pond is approx 30,000 liters and is placed in shadow. He use pond filter GREEN RESET 100L (2x25W UV-C, 100 l volume, 16 000 l/h).

We got the idea to make the aquaponic system and connect it to the pond by another pump. The AP system includes grow bed (750 liters of gravel) and raft (400 l volume). I design the system with swirl filter unit, but I would like to ask you if this is unnecessary. The raft should be clean, because the grow bed also works as a mechanical filter. But what growbed? Will it be necessary to filter the water from the mechanical particles from the pond? Should we add a worms, which could reduce detritus, but will it be enough in the outdoor environment?

Swirl filter serve as "waterworks", where I can reduce all flows and shut down both grow units independently. When we make it withoutthree blue swirl filters it will be simpler and cheaper, but in grow bed will not be filtered water.

How would you do that?

Thanks a lot for the reaction, I hope I wrote all the information about the problem

I apologize for my English and thank you for your help and your opinions.

01.png

02.png

03.png

04.png

05.png

06.png

07.png

Share this post


Link to post
Share on other sites

Hi chily

Welcome to APN/HQ

Nice drawings :thumbsu:

To your question, do you need a swirl filter  No you don't, how ever you will be better off, with som sort of solids filtration.

Swirl filters like in your drawings are fine, but you could use the chamber they are placed in, as a settling filter, just put in a number of baffles and drop the barrels.

plain-sedimentation-tanks-types-design-considerations-13-638.jpg  

 

cheers

bigdaddy likes this

Share this post


Link to post
Share on other sites

Hey growers!

So I found the time to do it all. The "filter" is under GB .. It's rather water management system than filter. Euro box is connected with raft by pipe for principle communicating vessels. The water level in eurobox is determined by the overflow (PVC knee) in raft bed.

Grow bed will drain through affnans siphon outlet into eurobox, the water flows from the eurobox to the raft bed and from there back to pond through big orange pipe.

The raft bed is continuously filled with a bypass pipe through eurobox. If the principle communicating vessels dont take a volume of water from grow bed, eurobox have overflow too.

What do you think, is it suitable or too complicated?

The styrofoam board on the raft bed will not float but hang over the surface. We'll probably air it, I saw it works without air, but I'll be calmer when bubbler (DWC) is bubbling. :D

I haven't bought a pump yet, will you help me a little? Will it be enough?
Max head: 4,5 m
Flow rate: 9500 l/h
https://www.ebay.co.uk/itm/Aquafort...191684?hash=item2cea7670c4:g:gLEAAOSwTpVc3HMm

Thanks!

01.png

02.png

03.png

04.png

05.png

06.png

pumpSelect.jpg

Share this post


Link to post
Share on other sites

Hi again

On 20.2.2019 at 1:28 AM, chily said:

Buddy has a pond on backyard since June 2018, he's got trouts there and some perches there. The volume of the pond is approx 30,000 liters and is placed in shadow. He use pond filter GREEN RESET 100L (2x25W UV-C, 100 l volume, 16 000 l/h).

As a rule of thumb all the water from the pond should be run thru a filter once an hour minimum, so from the outset you are 14,000 short.

So a add on filter (any) is a good idea IMO.

I would go back to your first idea, with some sort of settling filter (any) to take out the solids in the water flow .

I do think you complicate the process unnecessarily much with all the piping involved, and honestly  can't see the point of using a siphon & the eurobox other than the fun of fiddling and tinkering.

I would go for a constant subsurface  flow in the growbed, let the water drop directly to any next levels (creating splash /aeration)  .

On 18.5.2019 at 6:56 PM, chily said:

I haven't bought a pump yet, will you help me a little? Will it be enough?
Max head: 4,5 m
Flow rate: 9500 l/h
https://www.ebay.co.uk/itm/Aquafort...191684?hash=item2cea7670c4:g:gLEAAOSwTpVc3HMm

The flow rate chart of this specific pump is here

03287_ECOMAX_O-6500_SERIE_FILTERPUMPE_1.jpg

As you can se in the chart, the flow rate is down to  about about 4500 L/h at 2,5m lift

On 18.5.2019 at 6:56 PM, chily said:

pumpSelect.jpg

However you are lifting the water to the top of the growbed (or swirl filter ) and not to the bottom , so you have to add a bit more to your total lift (static head) .

There is no hight measurements on the AP-unit in your drawing, but there is one on the barrels in the initial layout (67cm) , so counting the sidepanel boards on the later drawings my guesstimate is ruffly an additional 1m static head. 

So a total of 3,5m static head gives you a max flow of approximately 2200 L/h not counting the dynamic head loss.

 

cheers     

Edited by ande (see edit history)

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now