Triple Super Phosphate - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 02-28-2008, 08:35 PM Thread Starter
PTrader: (0/0%)
Join Date: Jan 2008
Posts: 34
Triple Super Phosphate

I just got home from my local nursery, and they had a product called Hi-Yield Triple Super Phosphate 0-45-0 with 45% available phosphate in the form of P2O5. Here were the ingredients:

Available Phosphoric Acid (P2O5) 45%
Arsenic 12ppm
Cadmium 11ppm
Cobalt <5ppm
Mercury <0.02
Molybdenum 4.2ppm
Nickel 14ppm
Lead <5ppm
Selenium <0.5ppm
Zinc 228ppm

Derived from Mono-Calcium Phosphate and Di-Mono-Calcium Phosphate.

Would it be safe to use this for an aquarium?
Eth is offline  
Sponsored Links
post #2 of 4 (permalink) Old 02-28-2008, 09:02 PM
Wannabe Guru
PTrader: (11/100%)
Join Date: Oct 2007
Location: SF Bay Area
Posts: 1,231
The phosphate that people use to dose their tanks is KH2PO4 = monobasic potassium phosphate, not phosphoric acid. This product also contains arsenic which is a poison. Even if it is only a trace amount of arsenic I would not want to expose the fish in my tank to it (or mercury either).
You can get a pound of pure KH2PO4 for $5. Cheap enough that there is no good reason to search around for a substitute.
captain_bu is offline  
post #3 of 4 (permalink) Old 02-28-2008, 09:26 PM Thread Starter
PTrader: (0/0%)
Join Date: Jan 2008
Posts: 34
I have some dry ferts ordered, but just found this stuff locally and wanted to see if anyone has tried it.

Eth is offline  
post #4 of 4 (permalink) Old 02-28-2008, 09:47 PM
Planted Tank Enthusiast
g8wayg8r's Avatar
PTrader: (0/0%)
Join Date: Dec 2003
Location: St Charles, MO
Posts: 517
I don't know if I would experiment with it in the water column but I do know someone that makes dandy substrate fertilizer with it. Go to an arts or crafts store that sell dark clay (you know, something that got iron in it). Pinch off a piece and flatten it to a quarter-size disk (you know, two-bits). Put a pinch of that stuff on it and ball it up again. Push it under you iron-thirst plants and there you go. They will grow like crazy.

Andrew, MASI Treasurer

This message is always under construction: 75-gallon tank; 2, Eheim 2026 filters - one twice broken; Tek Light with 4, 54W T5s (6000K) ; Sand on top of 4:1 sand:clay mixture; Milwaukee CO2 controller; PlantGuild vortex CO2 reactor; pH = 6.6, kH=70mg/l, GH=120mg/l; EI; Flourish excel on 50% weekly water change: AGA Member.
g8wayg8r is offline  


Quick Reply

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


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

Email Address:


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