Do I still need Flourish Excel If I use DIY CO2

1. I just added DIY CO2 and wondered if I would bennifit by continued use
of Flourish Excel daily.

2. When will I notice the benifits of CO2?

3. Why would the new leaves on Anubia be pale green? ....All my cryps are
doing great thought.

4. What other chems do I need?

My tank is 6 weeks old. I have a 40 Gal L with an all glass PC light with
with (2) 55W bulbs. Flourite bottom, PH 6.8 Temp avg 82F. I use Flourish
Excell daily, Leaf Zone weekly.

Jim