Could Dosing ferts cause a ammonia spike? - The Planted Tank Forum
 
LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 07-20-2011, 02:57 AM Thread Starter
Planted Member
 
PTrader: (3/100%)
Join Date: Jun 2011
Location: Houston, Texas
Posts: 239
Could Dosing ferts cause a ammonia spike?

Hello All,

Let me begin by saying I am brand new to aquariums. I started my tank roughly a month ago, planting from the start, full bioload from the start with tetra safestart. About a week in from inception I started seeing my ammonia and nitrites read 0 consistently, these readings were like this until today.

Two days ago, I started dosing fertilizers based off a modified EI dosing regime for excel/medium light tanks that I gathered from Tombarrs site.

I started seeing ammonia levels at .5 ppm, and nitrite levels at .25 ppm today and am unsure of where these appeared from.

My question is this. Considering I am unsure if my aquarium is 100% cycled (since to me its plausible the plants were eating up the ammonia quicker than my fish could produce), would dosing kh2po4 and kno3 cause ammonia and nitrite spikes if my plants prefer the fertilizers over the waste provided by my fish and its food?

I gave my fish an extra bit of food yesterday and today (though nothing they couldn't finish); could this also be the sole cause of the spikes? Should I stop dosing?

I just did a 50% water change, and am uncertain of the relationship between ammonia plants and fertilizers.

Any insight would be appreciated.
digitallinh is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 07-20-2011, 03:20 AM Thread Starter
Planted Member
 
PTrader: (3/100%)
Join Date: Jun 2011
Location: Houston, Texas
Posts: 239
an extra bit of info,

I dosed .8g kno3 and .4g kh2po4 dry straight into the tank.
digitallinh is offline  
post #3 of 3 (permalink) Old 07-20-2011, 03:22 AM
Algae Grower
 
PTrader: (0/0%)
Join Date: Dec 2010
Location: Lincoln, NE
Posts: 76
I don't see how.

Plants prefer ammonia over nitrate/nitrite as their source of nitrogen and should readily absorb it. I don't see how adding other things plants need would impair that function.. if anything, it would increase it.

Some thing that may cause it.. an accumulation of waste in the filter or substrate, plants dying off due to light/CO2/nutrient deficiencies, more adequate fertilization causing algae to die off and no absorb ammonia (algae is good at that).

0.5 ppm ammonia isn't terrible. While not ideal and should be watched, fish can tolerate it. 0.25 nitrite would be no concern of mine since it's less toxic in the short term than ammonia.

Keep in mind, doing a water change will result in the presence of ammonia if your water source has chloromines. Chloromines are just chlorine that's bonded to ammonia. When you use conditioner to eliminate them, it breaks that up and releases small amounts of ammonia.
Hannothan is offline  
Reply

Tags
None

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome