Other Causes for cayno?

Discussion in 'Nuisance Algae' started by Renier, 15 May 2012.

  1. Renier

    Renier

    Joined:
    22 Aug 2007
    Posts:
    259
    Likes Received:
    3
    Hi guys!

    Other than: high nutrients,temp swing's,overfeeding,RO TDS readings,light spectrum
    is there anything else that will cause cayno to flourish?
    I've been struggling for a while now and just found out that my skimmer's impeller
    split open and started to rust,could rust cause cyano?
    obviously if the skimmer isn't preforming at optimum its not helping the situation but
    Ill get that sorted asap.

    also how do you guys control your fans to switch on and off to keep temps stable?
    most thermostats I can find have metal probes.
     
  2. AdS Guest




    to hide all adverts.
  3. mandarinman

    mandarinman

    Joined:
    18 Oct 2007
    Posts:
    6,377
    Likes Received:
    70
    Location:
    capetown,durbanville
    Carbon dosing
     
  4. mandarinman

    mandarinman

    Joined:
    18 Oct 2007
    Posts:
    6,377
    Likes Received:
    70
    Location:
    capetown,durbanville
    Not enough good bacteria
     
  5. mandarinman

    mandarinman

    Joined:
    18 Oct 2007
    Posts:
    6,377
    Likes Received:
    70
    Location:
    capetown,durbanville
    Sediment due to lack of water movement in certain areas.pics please
     
  6. mandarinman

    mandarinman

    Joined:
    18 Oct 2007
    Posts:
    6,377
    Likes Received:
    70
    Location:
    capetown,durbanville
    Iron levels dont cause cyano
     
  7. Irma

    Irma

    Joined:
    9 Feb 2011
    Posts:
    440
    Likes Received:
    15
    Location:
    Midrand
    I had major cyno problems and tried everything. I was then advised to change the brand of salt water that I was using to a better quality salt water and two weeks later it was all gone.
     
  8. butcherman

    butcherman Moderator MASA Contributor

    Joined:
    7 Sep 2009
    Posts:
    11,626
    Likes Received:
    280
    Location:
    Kempton Park
    what did you change to @Irma?
     
    Last edited by a moderator: 26 Nov 2015
  9. Nemos Janitor

    Nemos Janitor

    Joined:
    7 Feb 2009
    Posts:
    8,384
    Likes Received:
    286
    Location:
    Joe's Mountain
    High CO2 and lack of DO
     
  10. Albert Terego

    Albert Terego

    Joined:
    19 May 2008
    Posts:
    599
    Likes Received:
    6
    Location:
    Randburg, Johannesburg
    A normal timer works well. Switch fans on about an hour after lights on and switch off about an hour before lights out as a start. Adjust the period on/off as required.

    Cyano - the single biggest cause is high nutrients, specifically dissolved organic carbon (DOC). DOC's are added by food, waste products, dead livestock and carbon dosing, and inadequate removal via poor skimming will not help matters.

    Fix the skimmer, run a good quality carbon to absorb DOC's, increase aeration (helps increase redox which assists in breaking down DOC), and improve flow/circulation (if required)
     
  11. Irma

    Irma

    Joined:
    9 Feb 2011
    Posts:
    440
    Likes Received:
    15
    Location:
    Midrand
    I now get the salt water from Dorry. They did tell me the brand but I cannot remember.
     
    Last edited by a moderator: 26 Nov 2015
  12. RiaanP

    RiaanP Moderator

    Joined:
    11 Aug 2008
    Posts:
    23,163
    Likes Received:
    1,232
    Location:
    Centurion
    re-using old Aragonite substrate. Especially if it was dried out or just left standing. The bacteria life on it died. You need to cycle this separately until cycled.
    How do I know.... Well, you always learn with this hobby.
     
  13. brentnorm

    brentnorm

    Joined:
    6 Dec 2007
    Posts:
    2,198
    Likes Received:
    11
    Location:
    Cape Town
    Doesn't carbon dosing lead to low nutrients?
     
  14. Pete

    Pete

    Joined:
    3 Apr 2008
    Posts:
    1,196
    Likes Received:
    6
    Location:
    Under the sea
    Irma would have changed to Seachem's Salinity if she is getting her water from Dorry's
     
  15. mandarinman

    mandarinman

    Joined:
    18 Oct 2007
    Posts:
    6,377
    Likes Received:
    70
    Location:
    capetown,durbanville
    In the long run if skimmer is pulling well fed bacteria out but cynobacteria gets fed by the carbon too. the idea is to get nutrients pulled out of water column before they settle on surfaces for cyno to play with
     
  16. brentnorm

    brentnorm

    Joined:
    6 Dec 2007
    Posts:
    2,198
    Likes Received:
    11
    Location:
    Cape Town
    Thanks for that.
     
  17. Renier

    Renier Thread Starter

    Joined:
    22 Aug 2007
    Posts:
    259
    Likes Received:
    3
    Thanks guys

    Ill up my WC a bit.
    I got my activated carbon from The waterboy does anyone else use it?
    also I cant seem to get my TDS reading on my RO water les than 9.
    Now I dont even know if its calibrated or not Hmmm have to check that.
    I replaced my filters about three months ago.so should be fine.
     
  18. mariusmeyer

    mariusmeyer

    Joined:
    7 Jul 2009
    Posts:
    3,055
    Likes Received:
    210
    Location:
    Jukskei Park, JHB
    The carbon from the waterboy is very good. I know of quite a few people who use it. The TDS of your RO will be influenced by the supply water quality and the RO unit itself. Since you replaced the filters recently it could be that the membrane is not so lekker anymore. TDS meters does not need to be calibrated. Do you have DI resin as the last stage on the RO unit?
     
Recent Posts

Loading...
Similar Threads - Causes cayno Forum Date
Deadly disease causes discoloration New Members 23 Mar 2013
Own stupidity causes high nitrates. Boyu TL450 and TL550 advice 10 Dec 2011
perspex causes algae? General Discussions and Advice 1 Jan 2011
What Causes Arthritis Jokes 24 Feb 2009
Aquarium octopus causes havoc General Discussions and Advice 17 Dec 2008
Red slime or Cayno ??? Beginner Discussions 6 Jun 2016
Is this cayno General Discussions and Advice 12 Sep 2015