All times are UTC + 8 hours




Post new topic Reply to topic  [ 2 posts ] 
Author Message
PostPosted: Nov 25th, '17, 18:00 
Offline

Joined: Aug 29th, '16, 22:33
Posts: 9
Gender: Male
Are you human?: Yes
Location: Esperance Western Australia
Besides seasol can anyone give me any tips for fertilisers and additives that are suitable for aquaponics systems that won't harm fish.


Top
 Profile  
Reply with quote  
    Advertisement
 
PostPosted: Nov 25th, '17, 18:19 
Offline
A posting God
A posting God
User avatar

Joined: Sep 29th, '14, 13:15
Posts: 2105
Location: Australia
Gender: Male
Are you human?: mostly
Location: Perth, West Aust
depending on your setup you can put bood & bone (not too much) sprinkled on the grow bed and gently water in.
Also the Yates B&B with potash. Good for tomatoes. Sulphate of potash can help.

If you need nitrates (usually only young system) - you can add a little power feed direct to grow bed or charlie carp.
You also have the option to foliar feed - in which case you can use most things in moderation.

Also depends on system pH. eg. Potassium Carbonate (KCO3) and Caclium Carbonate etc is useful if you have a low pH system.

Some people have used organic supplements like 'tea bags' etc.
But mostly in AP you are chasing elements like potassium (K), Iron (Fe), magnesium, sometimes Ca.
(the ones that most plant deficiency charts show)


Mostly you need to stay away from supplements that are high in nitrogen and phosphorous (N & P).
After that copper, zinc and some metals that are toxic to fish.

with supplements don't use too much of the same thing and make sure what you use is applicable to your pH.
eg. sulphates etc can build up over time.

[edit] as a rule however you should not need to supplement too much if you use a high quality feed and have a reasonable level of stocking. It is not hydroponics so definitely less frequent and mainly when plants suggest you need it. You may need to supplement a little bit more when a system is low stocked, small fish or under stocked.

_________________
.
Darren ( dlf_perth )

May the fish sh*t and the plants grow.....


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC + 8 hours


Who is online

Users browsing this forum: No registered users and 4 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 : 0.061s | 18 Queries | GZIP : Off ]