Since you are going to restart the tank. The parameters now seem not much of importance. The ca and mg ,I roughly target on a ratio of 1:3. Say suppose ca is 400 then mg should be at about 1200. It is my way on this. I keep kh at about 7~8dkh. Don't ask me why. I was tought this way. Just...

You are way too much concerning about contamination. I wouldn't fixate on this,or can't go on. The companies want to hold and establish their reputation.I would trust their product not harmful. I think they are all good. It is kind of " feel" thing.

That is wet sand. It will be a bit costly. I only have experience of the cheap sand. I think I won't be able to judge if it is worth trying. I would make do with cheap coral sand. Or choose reliable products like Fiji and red sea sand.

yup i use #0. If the flow is too intense & close, #0 sand could be blow up. I dont have the issue. actually i don't care if it is beach sand. i use the cheap one. there are expensive ones like red sea sand and fiji sand . if you don't mind the cost,this is purer better. and this...

https://www.youtube.com/watch?v=jW1Xmhfegf4

that's fine! # 1 sand grain size is about 2mm or so. but i know nothing about #5. ther is #0 sand , I use this #0 ! I just checked #0 sand is around 1mm ,#1 sand is about 2mm. like this...

you too!

oh ,you probably won't be able to reach them now . I quess you roughly will need 30kg fine sand for 2c~3m thin layer your tank. But i can't be 100% sure about it.

No I said "if"....... can you ask 青島 rough size of their 20kg sand pack ? length width and height.

how much sand you need to buy? you will have to ask the seller about dimension of their pack.roughly length X width X high cm = L. then you will see the volume each pack. for eacj 1cm sand of you tank is 90X 60X 1cm = 5.4L that means each 1cm layer you will need 5.4L sand...

If you use #5 at the lower layer and #1 on top . that can't be a thin layer. probably you will need at least 5cm~6cm or more sand all together. am I right? I believe it is also a good sand base even better than just thin fine sand. However ,I haven't got this I am not able tell you...

and if you do DSB. I hear that it takes time to wait for the system to turn mature. a long way to go! I used to just simply rinse the sand until the water is clear. then ready to use.

the plan is to have only 2cm sand. I have no idea how to use both #5 and #1 sand the same place at the same time. and as for haveing anaerobic environment , my suggestion is not to use # 5 sand because you will have liverocks and the rock itself can do the same thing ( For SPS i think it is...

I would do the display tank at one go(not move anything for the sump) ! LPS will be fine probably. But i would keep the fishes in a bucket a while.

You said you are ganna do it the upcoming holiday, you have got 4 days ,right?

Just think of one more thing about sand cleaning. you will need one "sand cleaning Goby" and about 5 star fishes. this combination is working really good. Be sure to pick heallthy ones .

我也覺得是0.5

Lover of reefing will never give up! Yay! Just my own thinking for your problem, 1)l have feel that you must have done some kind of false step at the begining then caused bad effect. 2)your tank needs more live rocks, if you ask me why, I don't know. I just have a feeling that it matters...

your equips are way better than mine! you will do it right and good this time !

No i am not in KZ system. mine is more like combo system. that is a little of this and a little of that! I dont know what my system is.