DIY Ferts!

Discussion in 'D.I.Y.' started by N_Rob, Oct 14, 2008.

  1. N_Rob
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    N_Rob Noob

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    Does anyone on this forum know of a chemicals supplier that sells ferts to the public in Jozi?
     
  2. wearsbunnyslippers
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    wearsbunnyslippers Administrator Staff Member

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    what chemicals are you looking for?
     
  3. N_Rob
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    N_Rob Noob

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    Potassium Nitrate Ive got (Dischem)
    Looking for -Mono Potassium Phosphate
    -Calcium Carbonate
    -Potassium Sulphate
     
  4. wearsbunnyslippers
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    wearsbunnyslippers Administrator Staff Member

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    mono potassium phosphate you can swap with monosodium phosphate which can be found in lenolax, also at dischem.

    to make up for the potassium you can add natures no salt which is potassium chloride.

    unless your water is extremely soft, you dont need to dose calcium carbonate, but if you really want to add this you can look for agricultural lime.

    and with adding potassium chloride you wont need potassium sulphate.

    read up on EI instead of PMDD as a dosing method, see what you think...

    edit: you will also need a good source of micros if you are going to be dosing macros...
     
  5. N_Rob
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    N_Rob Noob

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    Ive read all about Estimative Index, and Im currently dosing-Seachem - Potassium,Nitrogen, Phosporus,Trace and Iron, based on the EI regime, and then Excel after WC's, but its so frikin expensive, and Ive got three tanks at the moment!!!!!
     
  6. wearsbunnyslippers
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    wearsbunnyslippers Administrator Staff Member

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    yeah, the seachem range is nice, but it does work out expensive...

    i am going to try trelmix for my micros...

    i was using an all in one hydroponic mix, but i got green water recently, i dont know if it is related but i have gone back to EI anyway.
     
  7. Dirk B
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    Dirk B Aquascaper

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  8. Dirk B
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    Dirk B Aquascaper

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    And just a general warning, don't try to use the fertilizer mixes for normal garden plants (such as trelmix), they contain ammonia which is toxic to fish and much too high levels of nitrates which are also detrimental if not toxic for fish.

    Kind regards,

    Dirk
     
  9. Silikube
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    Silikube Moderator Staff Member

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    Hey N_Rob, there is a company called "Warren Chem Specialities". They have branches both in Cape Town and Joburg. I got most of my dry ferts from the Cape Town branch. Here is the joburg contact nr: 011 452 1340.

    Just to add some more links where dry ferts are also discussed:
    http://www.apsa.co.za/board/http://www. ... ic.php?t=8
     
  10. wearsbunnyslippers
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    wearsbunnyslippers Administrator Staff Member

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    Hi Dirk,

    i thought trelmix was just a trace micros solution, i was not aware it had ammonia in it?

    if this is the case i will not be trying it...

    i have emailed them, hopefully they will reply on the contents...
     
  11. wearsbunnyslippers
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  12. Philip
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    Philip Algae harvester

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    Hi Guys

    I purchase 500g of potassium sulphate,500g potassium nitrate and iron chelate.
    For my 2 mtr aquarium I add 1Tbsp Potassium sulphate
    1 tsp potassium nitrate
    500ml water and I dose only 20ml every second day.
    iron chelate , I use 1tsp in 500ml and dose 10ml once a week.
    Now one has to experiment to see what amount of ml you need for your tank.
    This is all that I use with great success.
    but everybody to their own.
    The chemicals are pharmacy / food grade and it costs =- R 60 per 500g
    so good luck .
     
  13. jannie_s
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    jannie_s Noob

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    This is what i use guys and cant keep up with the trimming.
    Bottom layer 1 bag of peatmoss
    quater tub of osmocote native -not sure if thats available in SA (pellet slow release fert does not affect fish as i had my discus and they were all happy)
    7KG of laterite
    and finally 3 inches of gravel
    All i do is monthly water changes and my lights are on for around 4hrs per day
     
  14. Dirk B
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    Dirk B Aquascaper

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    Hi Jannie,

    Perhaps you can tell us a little more. What do you mean by "quarter tub of osmocote", how much was this?

    And you say you do not keep discus in that tank any more, why not?, What do you keep now?

    Kind regards,

    Dirk
     
  15. Greystoke
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    Greystoke Specialist

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    You can get fertiliser grade potassium sulphate (K[sub]2[/sub]SO[sub]4[/sub]) usually in bags of 5kg (lasts a lifetime ;D) from nurseries at a much reduced price. They don't always have it in stock, because it's a slow mover. So, just phone around first.

    Regards
    Cor
     

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