Jump to content
inTank Media Baskets

200ltr reef tank


Recommended Posts

Hi all, my nitrates are zero, and phosphates are 0.04, the problem is my torch coral is shrinking  to almost 5mm long... 

i have a 200ltr tank and i have just done a 25ltr water change.

my skimmer is back on as i have had zero nitrates for 2 weeks now .

its the red sea test kit, and  all other prams are ok..

any help please ASAP... i am struggling now with this problem

I am using Coral food though a syringe directly feeding it..

1026 sal

430 cal

mag 1500

 ph 8.2

nitrates 0....

phosphate 0.04

only 7 fish.. 1 x 3" regal tang.. 2 clowns, 2 bangi's  2 fire fish.. 

tank is 18months old now...

should i turn off the skimmer 

should i turn off the phosphate reactor

should i remover the filter sock


POSTED 07-11-21... TIME 17.09









Link to comment

How often are you feeding the fish? And what are you feeding?


How often are you doing waterchanges?


Phos reactor, i wouldn't use one personally. Your phos is at 0.04, any lower and you can have even bigger problems.


Are you using any media that reduces nitrates? 



If reducing frequency/size of waterchanges and increasing feedings doesn't raise nitrates then dosing nitrates is the next step

Link to comment

hi i am feeding every other day, 2 frozen cubes shrimps... mixed in Red sea A/B then syringed  into the corals..when defrosted 

i did add cheato  a few weeks ago and removed it today.

water changes i was doing 50ltr every 2 weeks.. 

phosphate reactor has about half a cup in it and changed every 2 weeks  ( phosguard  )

i think the cheato was sucking all the nitrates out..


how do you remove your phosphate's

should i turn off the skimmer..

should i remover the filter sock for the time being  


Link to comment

You need phosphates and nitrates. 


Phosguard and other phos reducing media should only be used as needed.


A sterile tank devoid of nutrients and algae is not healthy.


Red sea ab + is supposed to be dosed into the tank directly in high flow not syringed into the corals.


The filter sock just removes particles not really nutrients.



Link to comment

hi should i turn off the phosphate reactor,  even tho its at 0.04.. 

should i  leave the skimmer off totally and let the nitrates build up

how do i control the phosphates and nitrates.

i will stop direct feeding the corals today..


Link to comment
  • 1 month later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recommended Discussions

  • Create New...