Planted Tank Guru
Eriocaulon sp. 'cinereum' is one of the easier eriocaulon specie to grow. it prefers an acidic substrate such as Flora Base, Aqua soil, it will also do well in Eco Complete, add a little peat.
A deep substrate of at least 3" is necessary as this plant has a massive root system, take care when uprooting a large plant, you can gut the substrate (KH/GH/5 or less preferably).
Lighting needs to be within the 3wpg range.
CO2 injection is a necessity for robust growth, 24/7 managed and regulated for best results, a mist of C02 is also recommended.
Fertilization should be diligent, NPK, TE w/Fe.
The bio-filtration also plays an important role in the overall success of growing this plant and plants of this specie. filter needs to be large enough to produce good flow and house adequate media.
A very stunning and unique plant when grown to its glory in the aquarium, even when it is trying to flower in the right setting.
Propagation is easy for a healthy plant, it will produced new plants around the crown, and/or along the stem, it can also produce new plants from its tentacles/drum stick, not always but it can as pictured, when it does, let it form roots then snip and plant.
When it starts to split from the crown you will see it starting to grow more plants out from the main stem, I have gotten as many as 5 or 6 out of one.
It takes patience to separate, do not try to do it to early, let the plant grow like that for awhile until it is obviously two or more plants, during this time especially I will frequently uproot it (once every week or so) with a bucket of water and plenty of light gently peal away the bottom layer of leaves around the plant keeping it clean until it's visible that their are separate plants, I use a sharp pocket knife but a razor blade will work too, gently slice between the plant being cut and the main cluster, you can keep doing this as long as it is visibly another plant, dip in water and gently knead the roots apart, clean the plant, peal away any damaged leave and cut the roots, I leave a little more than half, replant,.
Once you do it this way a few times, you get fairly good at it and will begin to see how easy it is to propagate this plant, just takes patience.