chemical elements for aquarium test

[MrGoatastic]

Before submitting a new icon request, please confirm the following:

• I have searched all issues to make sure there isn't a request for this icon.
• I have searched the current library to make sure the icon doesn't already exist.
• I understand that brand icons are no longer being added and I can use SimpleIcons for my brand icon needs.
• I only intend to request a single icon (or a few near-identical ones) in this issue.

What would you use this icon for?

Identify a Chemical component in a timer for my aquarium test ( ex: Nitrite NO2 and nitrate NO3 )

Give us an example of what this icon might look like.

NO2 with a small two in the lower part
NO3 with a small three in the lower part
pH
PO
Fe
PO4 with a small four in the lower part
NH3 and NH4 (you start to see the patterns? :) )
KH and GH
Ca (its calcium :D )

Here some Test manual from FLUVAL wich contain exemple of the Chemical simbols for the elements we test in aquarium

A7869_Ammonia_NH3-4_Manual_Map.pdf
A7876_Hardness_KH_GH.pdf
Fluval_Betta_Care_Guide.pdf
fluval-aquarium-care-guide.pdf
Fluval-Saltwater-Care-Guide_en.pdf

[Templarian]

We have several issues opened asking for specific molecules. #6964 #7216 #7280

We're not exactly sure how to handle all of these and it's probably not going to be possible in the icon pack due to the size constraints.