Ehiem's internal sponge filter is good for a planted tank if you already have a pump to 'power' your CO2 reactor i'm using it in a 3 feet planted tank, and only clean the sponge when there is totally no water output coming out at all lol! ;D Really that will be good for a planted tank due to the reducing effect.

Pflanzengold7 contains special plant hormones and it will also activate the plant enzymes. It also contains chelated iron which will be used due to the extra plant growth. It works very well for any troubled growth, plants that are growing slowly or have problems growing and have algae on them. It basically makes the plants grow extra well so that no algae can actually grow on it. This is how Gold7 inhibits algae, by concentrating on the plant (which is what we all should do) and not on the algae. I find that Gold7 and A1 works very well indeed.