水草情迷

I would like to know if there is some black thin threads (algae) attaching on the end points of the leaves, dose it mean there is too much light or fertilizer?

Tank capacity: 133L,
Lights: T5HO 39Wx4, 2-3 hrs in the morning, then on again around 5pm to 10-11pm at night.

Fertilizer is seachem K and Ample Liquid Fertilizer. only once per week, and TMG as well. Please comment.

有什麼草, 有什麼生物, 數量有多少, 用什麼過濾. 落肥份量又係幾多 ?
你既分段時間, 會不會長了點, 為什麼不一次過開呢,
雖然有說分段照明對滅藻有幫助, 但其實不用分段, 打理得好, 一樣可以冇藻.
黑毛藻係養份過高, 植物生長不佳時最易出現.

_________________
多多交流, 多多研究, 多多搜尋
我的水族相簿

Thank you SuperCTW!
In fact, I am not sure if it is 黑毛藻 as it is just like some thin threads swinging with current. I know what 黑毛藻 looks like, it is like a cotton ball in black. But indeed there is some on the 'cow hair'..

It is basically 'sun', 'red butterfly', etc. But I also think I do not have enough for the tank.

I am using Fluval 304, having some fish (less than 30 tails), 落肥份量is less than instruction's. I change 1/3 H2O about every 4-5 days. I also doubt 養份maybe過高

Many thanks, please comment.

其實，我只種了些絲葉太陽、普通太陽、紅蝴蝶、紅松尾、綠松尾，蔍角台和一種扭蘭。平時只參照說明落肥，什至比指示少一半，尤其鐵肥。曾經加過一個power head於水缸底部，目的想造流，但不是太有用（雖然水流很大），現在不打算再用。普通太陽原本生長相當茂盛，但現在不知如何，葉尖出現白化。於是黑絲藻便於那裡生出來。我相信這不是黑毛藻，因這次是呈現絲線狀的，不是一個毛波波呢。
請多多指教。
現改光照為下午兩點到晚上十點左右。