Adding EasyCarbo to combat algae is not a good start
It may be a quick fix Dan as a source of carbon for the plants, the OP is still getting to grips with a planted but already has it running and may take time to understand co2 and it's impact never mind purchasing the equipment. What you would probably be best off doing is definitely reducing the lighting either in tubes or duration or better both. This will give you far less problems in the co2 fert department until you have a better understanding of how they work and will also leave some room for error.
If you worried about the EasyCarbo being toxic to your fish then just dose at the stated dose and manually remove as much algae as you can. Later on at some point you can crank up the lighting but only if everything else in the tank is in tune with the higher lights.
I kept planted tanks many moons ago and was brain washed by many local fish stores convincing me you had to have huge lighting to grow plants and no nitrates in the water too prevent algae. After being in this board a while I have used the advice of reducing my lighting and increasing fertilisation to get far better results.
As soon as you get the lighting and nitrate myth's out of your head the easier it will get, it is hard it took me ages
very addictive.
A lot of people in here Dan included are experts, they create great show tanks that feature in publications and shows. If your like me and just want a nice tank with some healthy plants in and some fish for the long term then some of the methods in here may not apply to what you want or your lifestyle. Find out what's best for you and what you want with your particular tank.
Never be under the illusion that you have to have massive lighting and £100's pounds worth of equipment just to grow plants. They will do ok with the minimum of expense and effort as long as you don't put extremely bright light over the top of the plants.
Have a look in the board for Low tech tanks which are run on minimum lighting needing, less co2 if at all and little ferts.
High tech tanks are high lighting requiring a supply of ferts where the plants are never left without for any time and good levels co2 well distributed through the tank which cost more to run as well as needing some fairly expensive equipment depends on you budget.
So what you have there is a the lighting for a high tech tank over the top of low tech set up which induces algae, just pick which path you want to go down and the rest of the info is in here somewhere.
Happy Reading