Here are some links that have proven useful to me in the past. No special order.....
Feel free to PM me with any others. I will then organize and repost/edit so the thread isn't cluttered with many replies........
AH supply lighting kits
Compact Fluorescent Lighting Kits
Current lighting Home - I went with them
Outer Orbit HQI | Current What's Next
Aquatic and Reptile Lighting Solutions - Aqualight.com
Algae id - visited many times!
Aquarium Algae ID (updated)
Dwarf cichlid forum -south american and african - good info
Apistogramma Forums - The Dwarf Cichlid Connection - Powered by vBulletin
SuMo CO2 Regulators for Planted and Reef Aquariums - Home - I went with them
Welcome to Rex's Guide to Planted Tanks
Substrates - this one link has just about every popular type...
Substrates : Aqua Essentials
Fertilizers - I use these as do many here
Planted Aquarium Fertilizer
Loc Line - used as a pump return line with different configurations - ordering as we speak!
modularhose.com - Loc-Line Modular Hose
Mazzei Injectors - used to mix c02 into the water. Ordering now....
How a MazzeiŽ Injector Works - Mazzei Injector Corp
Good site on aquatic mosses - would love some of these............
Aquatic Moss. How to grow Aquatic Moss. Info on Java Moss, Christmas Moss, Taiwan Moss, Peacock Moss, Stringy Moss
Durso standpipes - for overflow intakes - helps reduce waterfall effect and subsequent c02 loss.
Durso Standpipes :: OnLine Store
Overflow pipe Hofer urgle buster for quieter intakes
Hofer Gurgle Buster Construction
I'm sure I have more, but these have proven useful to me in the past.
Big Al's is a good source for additives, Prime, Tropica Master Grow, etc.
#1 Big Al's Aquarium Supplies: Fish Tanks, Stands, Decorations, Accessories
Usually in stock, decent price, and delivery. No I don't work there or own stock.....
And last but not least
Hope this helps. Feel free to add any others..........
These are all favorites, so easy to save as such.....