Advertisements
Aquatic Avenue Banner Tropica Shop Banner Fishy Business Banner
Page 1 of 2 12 LastLast
Results 1 to 20 of 21

Thread: Dry dosing

  1. #1
    Join Date
    Jun 2006
    Location
    Bt Batok
    Posts
    201
    Feedback Score
    0
    Country
    Singapore

    Dry dosing

    Advertisements
    Fresh n Marine aQuarium Banner

    Advertise here

    Advertise here
    I just get myself some dry fertilizer
    Ques is can I just dose the tank directly with the dry fertilizer?

  2. #2
    Join Date
    Apr 2004
    Location
    Ang Mo Kio
    Posts
    4,544
    Feedback Score
    6 (100%)
    Images
    81
    Country
    Singapore

    Re: Dry dosing

    Yeap.

    Some like to mix it in a cup of water beforehand and pour it into the tank, but I've been dumping powders direct into tanks for 5 years.

  3. #3
    Join Date
    Jun 2006
    Location
    Bt Batok
    Posts
    201
    Feedback Score
    0
    Country
    Singapore

    Re: Dry dosing

    Quote Originally Posted by |squee| View Post
    Yeap.

    Some like to mix it in a cup of water beforehand and pour it into the tank, but I've been dumping powders direct into tanks for 5 years.

    Really? That good to hear it

    May I know what is your dozing amount?

    My tank is 55litres

    Haven't start dosing and I already get struck on how much to dose

    Pls advise

  4. #4
    Join Date
    Apr 2004
    Location
    Ang Mo Kio
    Posts
    4,544
    Feedback Score
    6 (100%)
    Images
    81
    Country
    Singapore

    Re: Dry dosing

    Mine's a standard 2ft 60L tank so I'm pretty sure that's around your tank's size.

    What dry ferts do you have? Are you trying to follow the Estimative Index?

  5. #5
    Join Date
    Jun 2006
    Location
    Bt Batok
    Posts
    201
    Feedback Score
    0
    Country
    Singapore

    Re: Dry dosing

    Quote Originally Posted by |squee| View Post
    Mine's a standard 2ft 60L tank so I'm pretty sure that's around your tank's size.

    What dry ferts do you have? Are you trying to follow the Estimative Index?
    Yes trying to follow EI method haha
    I have the following
    Calcium
    Potassium
    Magnesium
    Iron fe2
    Nitrate
    Po4 xxxxx fleet
    Pls advise the amount to dose?

    I see 1/4, 1/8 & 1/32 .... Don't know how much is that too. 1/4 is it = 1.25ml?

  6. #6
    Join Date
    Nov 2008
    Posts
    2,213
    Feedback Score
    2 (100%)
    Country
    Singapore

    Re: Dry dosing

    Erm bro, those powders don't come as just "calcium" or "potassium". Need the full names to be able to advice you.
    eg. potassium sulphate, nitrate or phosphate?

  7. #7
    Join Date
    Jun 2006
    Location
    Bt Batok
    Posts
    201
    Feedback Score
    0
    Country
    Singapore

    Re: Dry dosing

    Quote Originally Posted by Navanod View Post
    Erm bro, those powders don't come as just "calcium" or "potassium". Need the full names to be able to advice you.
    eg. potassium sulphate, nitrate or phosphate?

    ops...ok got it...

    Calcium carbonate
    Potassium sulphate
    Magnesium sulphate
    Iron fe2 (Ferrous Gluconate)
    calcium Nitrate


    Thank in advance for the advises..

  8. #8
    Join Date
    Apr 2004
    Location
    Ang Mo Kio
    Posts
    4,544
    Feedback Score
    6 (100%)
    Images
    81
    Country
    Singapore

    Re: Dry dosing

    Try Aquatic Plant Central's Fertilator: http://www.aquaticplantcentral.com/f...fertilator.php

    You need an account with APC to see the page.

  9. #9
    Join Date
    Jun 2006
    Location
    Bt Batok
    Posts
    201
    Feedback Score
    0
    Country
    Singapore

    Re: Dry dosing

    Quote Originally Posted by |squee| View Post
    Try Aquatic Plant Central's Fertilator: http://www.aquaticplantcentral.com/f...fertilator.php

    You need an account with APC to see the page.
    Let say if the N needed is 0.5 tsp as shown on the calculator, am i going to dose 0.5tsp every alternative day or divide 0.5tsp by 3 (3 day mon, wed & fri)

    Thk

  10. #10
    Join Date
    Mar 2002
    Location
    Singapore; Bishan
    Posts
    3,182
    Feedback Score
    61 (100%)
    Country
    Singapore

    Re: Dry dosing

    Dry dosing is difficult and prone to human error. For start, I recommend pre-mix solution before you try direct dry dose (ddd). just my personal experience

  11. #11
    Join Date
    Jun 2006
    Location
    Bt Batok
    Posts
    201
    Feedback Score
    0
    Country
    Singapore

    Re: Dry dosing

    Quote Originally Posted by barmby View Post
    Dry dosing is difficult and prone to human error. For start, I recommend pre-mix solution before you try direct dry dose (ddd). just my personal experience
    how to dose this Iron fe2 (Ferrous Gluconate) by pre mix solution?

  12. #12
    Join Date
    Mar 2002
    Location
    Singapore; Bishan
    Posts
    3,182
    Feedback Score
    61 (100%)
    Country
    Singapore

    Re: Dry dosing

    Actually.. Planted tank need very little Fe.

    Frankly, micro-nutrient fertilizer works for me. all in one. boron, magnesium, Fe and etc. For this reason, they are call T.E -------> Trace elements.

  13. #13
    Join Date
    Nov 2008
    Posts
    2,213
    Feedback Score
    2 (100%)
    Country
    Singapore

    Re: Dry dosing

    Quote Originally Posted by barmby View Post
    Actually.. Planted tank need very little Fe.

    Frankly, micro-nutrient fertilizer works for me. all in one. boron, magnesium, Fe and etc. For this reason, they are call T.E -------> Trace elements.
    For EI dosing however, Fe is one of the more important and perhaps least "trace" of the trace elements required, where we try to keep it at 0.2-0.5ppm.
    I dose it separately using seachem iron

  14. #14
    Join Date
    Jun 2006
    Location
    Bt Batok
    Posts
    201
    Feedback Score
    0
    Country
    Singapore

    Re: Dry dosing

    Quote Originally Posted by Navanod View Post
    For EI dosing however, Fe is one of the more important and perhaps least "trace" of the trace elements required, where we try to keep it at 0.2-0.5ppm.
    I dose it separately using seachem iron
    So any advise on how to dose this Iron fe2 (Ferrous Gluconate) by pre mix solution?

    Meantime i pour abt 1.25g into my tank...

  15. #15
    Join Date
    Nov 2008
    Posts
    2,213
    Feedback Score
    2 (100%)
    Country
    Singapore

    Re: Dry dosing

    Quote Originally Posted by dannyfish View Post
    So any advise on how to dose this Iron fe2 (Ferrous Gluconate) by pre mix solution?

    Meantime i pour abt 1.25g into my tank...
    Based on your tank volume, you're most likely overdosing.
    From my not too accurate calculations, Ferrous Gluconate give 1.25ppm of Fe per gram dissolved in 100L of water. Assuming you change 50% of your tank water per week, you'll end up with almost 5.7ppm in the water, more if your water change is less than 50%. Thats far too much.

    Try to aim for 0.2-0.5ppm. Means you need only dose 0.2g per 100L which in your case, 0.11g per week. You can dissolve 11g in 100ml of water and dose 10ml per week. This is assuming you're changing 50% water each week. If you change less, you can afford to dose less.
    Remember never to mix Ferrous Gluconate with any phosphates or they may react to form iron II phosphate and precipitate out of solution.

    If my calculations are wrong, please correct me.

    By the way, how much did you get the Ferrous Gluconate for? I may wanna get some too if there's decent savings to be had

  16. #16
    Join Date
    Jun 2006
    Location
    Bt Batok
    Posts
    201
    Feedback Score
    0
    Country
    Singapore

    Re: Dry dosing

    Quote Originally Posted by Navanod View Post
    Based on your tank volume, you're most likely overdosing.
    From my not too accurate calculations, Ferrous Gluconate give 1.25ppm of Fe per gram dissolved in 100L of water. Assuming you change 50% of your tank water per week, you'll end up with almost 5.7ppm in the water, more if your water change is less than 50%. Thats far too much.

    Try to aim for 0.2-0.5ppm. Means you need only dose 0.2g per 100L which in your case, 0.11g per week. You can dissolve 11g in 100ml of water and dose 10ml per week. This is assuming you're changing 50% water each week. If you change less, you can afford to dose less.
    Remember never to mix Ferrous Gluconate with any phosphates or they may react to form iron II phosphate and precipitate out of solution.

    If my calculations are wrong, please correct me.

    By the way, how much did you get the Ferrous Gluconate for? I may wanna get some too if there's decent savings to be had

    I get it from aquariumfertilizer.com
    So you usually will get it from where? locally or oversea?

  17. #17
    Join Date
    Nov 2008
    Posts
    2,213
    Feedback Score
    2 (100%)
    Country
    Singapore

    Re: Dry dosing

    Locally. Shipping it in from the states sounds expensive

  18. #18
    Join Date
    Jun 2006
    Location
    Bt Batok
    Posts
    201
    Feedback Score
    0
    Country
    Singapore

    Re: Dry dosing

    Yes is Exp n + freight charges haha big hole

  19. #19
    Join Date
    Mar 2009
    Posts
    1,639
    Feedback Score
    4 (100%)
    Country
    Singapore

    Re: Dry dosing

    Where to get dry ferts locally? Mind pm me.

  20. #20
    Join Date
    Jul 2002
    Location
    Old Airport Road
    Posts
    1,890
    Feedback Score
    0
    Images
    67
    Country
    Singapore

    Re: Dry dosing

    You can get from http://www.singaporehydroponics.com/
    Visit the site, I think they have retail shop at Crawford Lane, used to have one in Bedok also but it is no listed on the site now (or maybe I missed it).
    - eric

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •