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Discussion Starter · #1 ·
The lobelia in my tank is growing, but it's only growing roots out of the substrate? any idea why? do i have an excuse to get a CO2 system now, lol? im dosing excel in my 75 gal, and i have a finnex 24/7 on it.

thanks
Ridley

Oh and I have black diamonds blasting sand for substrate. Dosing weekly feet’s and have some root tabs buried in a few places.
 
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