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Save Up To 35% Off Mars Hydro!
Save Up To 35% Off Mars Hydro!

GT Optimum

Original price $30.25 - Original price $254.10
Original price
$30.25
$30.25 - $254.10
Current price $30.25

Formulated by internationally renowned chemist Carl Barry, Optimum is one of Australia's most trusted two-part nutrients. It has been calculated to the highest possible standard of accuracy and is manufactured from the purest and most soluble mineral salts. The inclusion of chelates ensures that vital micro nutrients remain available to the plant even during pH fluctuations. 

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