AHHHHHH same problem happened again

[geoffrey]

Don't worry about those crypts, they will grow.

Beside that high dose of PO4, do you dose NO3 and K? What is your NO3 measured?

[naturetan]

I think algae problem is due to your tank that is newly setup for only a week. Plants has not rooted yet, and bacteria has not grown enough. With such a long period of lighting(12hrs) and running at such high light(~3.9W/gal), your tank is likely to have algae.

Reduce your light period to about 4-5 hrs, then gradually increase it by an hour every week to about 9-10 hours. Once your tank is more stable for about 1-2 months time, dose fertiliser fully.

At full dosing, K should be 20ppm or more, Fe 0.5ppm or more. Lower than that, likely to have defiency problem - especially if your lighting is that high. If you don't dose N & P, stock with enough bioload to balance it up(only after your tank is cycled).

[PeterGwee]

If you don't dose N & P, stock with enough bioload to balance it up (only after your tank is cycled0.

Don't up the bioload to supplement the N and the P... NH4, thats the thing you don't want in excess unless you like algae.

[bettapassion]

I appreciate all bros for your advice....I will reduce the lighting hours accordingly.....