PH-down - Google Search

It's cheap and plentiful.

e-bay.
Hydro store,
Nursery,
Garden center,
Aquarium store.
Cdot's advertisers.

Jus' type what ya want into google's search box

Do the same thing for PH-up.
(Or any question you may have about anything.)
Pretty soon, you'll be an "oldbie"
Den you can help out da new newbies.:jointsmile:

Tip:
No help dem too much, makes 'em lazy.
An' spoon-feeding is a never-ending, thankless job.

Couple fishin' lessons is all most folks need.:thumbsup:

Aloha,
Weezard