水草情迷

Hi all, I'm a new hand here. I want to change my marine fish tank to an aqugrass tank so I've read many many posts here and to some extent I have ideas on the settings. However, I'm still not confident enough and would like to ask for your help to correct me if anything goes wrong.

size 54"W x 12"D x 18"H

Current equipment that I think is still useful:

Hoi Lee CA160 Chiller
Hydor canistor filter
UV
O3 (I think it's optional on adding or not)
One head 150W HQI (not shown), can diy to 2 head if need (transformer and bulb equipped)
36" T5HO transformer x 2 and 2 white 2 blue tube (not shown, but need to diy a holder to sustain)
warmer
Toto 30" T5 (3 head, current 2 white 1 red)
Atman 30" PL
No brand 15" PL

On the lighting system, there are 2 options:

1. place the one head HQI on the left side, then diy the T5HO on the right side

2. place the reformed 2 heads HQI on the left side, then ToTo T5 on the right side

I hate electric works, but I can ask my friend to reform the HQI so I like option 2


New shopping list:

ADA black soil + ADA power sand (3:1), total 3" deep
二氧化碳氣樽 + 減壓錶 (有兩個錶的) + 電磁閥 from 新基
JAQNO 擴散筒
CO2專用喉 or 高壓氣喉
Ph meter (I'm using Snail brand at $350 for my another reef tank, good)

So here's my questions:
1.
In one post
JAQNO 擴散筒幾好用，有埋計泡,止逆閥工能,D泡好細!
塊陶瓷片仲可以拆出泥洗架，不過就貴D，要成$120
In another post
CO2:UP PH控制器+MRAQUA 4.5KG 2.8L鋁瓶+UP 電磁閥+JAQNO 擴散桶+DUPLA 止逆閥+ADA CO2監測器
So do I need to buy the 止逆閥 also?

2.
Power sand is a kind of 基肥 so I don't need to buy 基肥?

3.
細化器 = 擴散桶? just 2 diff design for a single goal?

4.
I want a low temp 電磁閥, is the one in 新基 suit my preference?

5.
I don't think I need 肥料 now, but is TMG + ECA enough for long term usage?

Sorry for so many questions, cos I really find all from previous posts

36" x 22" x 30"